Both phosphorus and chlorine are nonmetals. Ionic compounds come under covalent compounds when we analyse the chemical compounds according to the type of … This section begins the formal study of nomenclature, the systematic naming of chemical compounds. For example, iron(III) iodide, FeI 3, is composed of iron ions, Fe 3+ (elemental iron is a metal), and iodide ions, I-(elemental iodine is a nonmetal). The element written second is a nonmetallic ion (Anion). An alternative way to writing a correct formula for an ionic compound is to use the crisscross method. Carbon monoxide is one of the few compounds that uses this prefix. Watch the recordings here on Youtube! The naming conversion is such that the anion is named by taking the first part of the element name (chlorine) and adding -ide. Most ionic compounds are binary compounds, or compounds formed from just two elements. The second system, called the common system, is not conventional but is still prevalent and used in the health sciences. An ionic compound composed of a cation and the anion from an acid. After learning a few more details about the names of individual ions, you will be a step away from knowing how to name ionic compounds. Oxide always has a 2− charge, so with three oxide ions, we have a total negative charge of 6−. What is the ending for the name of all binary compounds, both ionic and molecular?-ide. 3. A binary compound is made up of two elements.In ionic compounds, one element is a metal and the other element is a nonmetal.In covalent, or molecular, compounds both elements are nonmetals.. Ionic Compounds When naming ionic compounds, the name of the metal goes first, followed by the nonmetal.The metal forms a positive ion, and the nonmetal forms a negative ion. The pearl and the oyster shell shown are both made of calcium carbonate. FeI3. Write the formula for the binary ionic compound: aluminum and nitrogen: AIN: Name the binary ionic compounds indicated by: AgCI: silver chloride: Name the binary ionic compounds indicated by: ZnO: zinc oxide: Name the binary ionic compounds indicated by: CaBr2: calcium bromide: Name the binary ionic compounds indicated by: SrF2: strontium fluoride: Name the binary ionic compounds indicated by: … Nonmetal atoms are found in the upper right of the periodic table, although hydrogen is sometimes included in this group. Leave out all subscripts that are 1. In the second compound, the iron ion has a 3+ charge, as indicated by the three Cl− ions in the formula. Missed the LibreFest? 4.5: Formulas and Names of Binary Ionic Compounds, https://chem.libretexts.org/@app/auth/2/login?returnto=https%3A%2F%2Fchem.libretexts.org%2FBookshelves%2FIntroductory_Chemistry%2FMap%253A_Chemistry_for_Changing_Times_(Hill_and_McCreary)%2F04%253A_Chemical_Bonds%2F4.05%253A_Formulas_and_Names_of_Binary_Ionic_Compounds, 4.4: Using Lewis Symbols for Ionic Compounds, 4.6: Covalent Bonds- Shared Electron Pairs, Naming Binary Ionic Compounds with a Metal that Forms Only One Type of Cation, Naming Binary Ionic Compounds with a Metal That Forms More Than One Type of Cation, information contact us at info@libretexts.org, status page at https://status.libretexts.org. This is not Calcium Nitrate, but this is an example drawn. Name the metal (the first element) as it … 4. Write the symbol and charge of the cation (metal) first and the anion (nonmetal) second. For example, consider FeCl2 and FeCl3 . acids that consist of two elements, usually hydrogen and one of the halogens— fluorine, chlorine, bromine, iodine. Binary ionic compounds are named with the two elements involved in the salt. Therefore, OF. FeCl3. Example \(\PageIndex{7}\): Sulfur Compound. We do not call the Na+ ion the sodium(I) ion because (I) is unnecessary. By the Stock system, the names are iron(II) chloride and iron(III) chloride (Figure \(\PageIndex{2}\)). Figure \(\PageIndex{1}\) Naming \(BaCl_2\). ANSWER: Correct Naming Molecular Compounds Learning Goal: To name molecular compounds using the chemical formulas and systematic naming rules. We know that cobalt can have more than one possible charge; we just need to determine what it is. The anion is named by taking the elemental name, removing the ending, and adding “ide.” If we were to use the stems and suffixes of the common system, the names would be ferrous chloride and ferric chloride, respectively (Figure \(\PageIndex{3}\)) . In this tutorial we will review the process for achieving these 2 objectives and practice with some worksheet problems. The name of this ionic compound is potassium chloride. Now that we know how to name ions, we are ready to name ionic compounds. please help with all of that you can! Unless otherwise noted, LibreTexts content is licensed by CC BY-NC-SA 3.0. The common system uses two suffixes (-ic and -ous) that are appended to the stem of the element name. For example, K +1 is called the potassium ion, just as K is called the potassium atom. Binary Compounds - They are the compounds formed from the metal cation and the nonmetallic anion, such as sodium chloride - NaCl. iron (III) bromide. Watch on YouTube. Thus, Fe2+ is called the iron(II) ion, while Fe3+ is called the iron(III) ion. Give the name and formula of each of the binary compounds formed from the following elements : a. Li and N b. Na and Br c. K and S thank you! Some of the worksheets for this concept are formulas and nomenclature binary ionic nomenclature work 5 ionc compounds summary naming ions and chemical compounds naming ionic compounds work i since we use different methods in naming binary … Nomenclature #2: Polyatomic Ionic Compounds 1. There are two ways to make this distinction. For compounds containing a metal which can have more than one charge, the charge on the metal is indicated by roman numerals encompassed in parenthesis after the name of the metal. Sodium is a metal, and oxygen is a nonmetal. total charge of cations = total charge of anions. Binary molecular compounds are generally composed of two nonmetal atoms conected by covalent bonds. In this method, the numerical value of the charge of each ion is crossed over and becomes the subscript for the other ion. Transpose only the number of the positive charge to become the subscript of the anion and the number only of the negative charge to become the subscript of the cation. Ionic compounds do not exist as molecules. An ionic compound is named first by its cation and then by its anion. Therefore, PCl, c. Both oxygen and fluorine are nonmetals. Similarly, O2− is the oxide ion, Se2− is the selenide ion, and so forth. From the periodic table consider cation with a fixed oxidation state. Use the multipliers as subscript for each ion. Task #11: Inorganic Compound Names. Therefore, Na, b. Iron typically exhibits a charge of either 2+ or 3+ (see [link] ), and the two corresponding compound formulas are FeCl 2 and FeCl 3. Iron can also have more than one possible charge. binary ionic compounds involves combining the names of the compound’s positive and negative ions. Write the formula for aluminum nitride and lithium oxide. Iron, for example, can form two cations, each of which, when combined with the same anion, makes a different compound with unique physical and chemical properties. Table \(\PageIndex{1}\) lists the elements that use the common system, along with their respective cation names. Video: Naming Binary Ionic Compounds. 2. Identify each compound as ionic or not ionic. Write formulas… Thus, this compound is also ionic. This formula merely indicates that sodium chloride is made of an equal number of sodium and chloride ions. The key difference between ionic and binary compounds is that ionic compounds contain two charged components whereas binary compounds contain two different chemical elements.. Ionic compounds are binary compounds that come under two different categories. Example \(\PageIndex{3}\): Naming Ionic Compounds. The metal cation is named first, followed by the nonmetal anion as illustrated in Figure \(\PageIndex{1}\) for the compound BaCl2. Be aware that ionic compounds are empirical formulas and so must be written as the lowest ratio of the ions. Type II Binary Ionic Compounds contain Transition metals (including the Group III, IV, V, VI metals, except for Al) with non-metal ions. View Homework Help - Binary Cpd Wkst from SCIENCE 9 at Beacon High School, New York. Leave out all charges and all subscripts that are 1. Once it is determined that the compound is ionic or covalent, the student can be asked to do either of the following: 1) Given the name of the compound, write the formula. It is important to consider the following steps while naming the binary compound. salt. CK-12 Foundation by Sharon Bewick, Richard Parsons, Therese Forsythe, Shonna Robinson, and Jean Dupon. Write the formula for each ionic compound. \(\ce{Pb^{4+}} \: \: \: \: \: \ce{O^{2-}}\). (A cation is a positive ion). Show the correct name for the following compounds. Signs of the charges are dropped. This method may be used to name any binary ionic compound, but in the instance of mono-valent metals it’s redundant and so not employed. Example: The ionic compound potassium chloride is composed of potassium cations (K+) and chloride anions (Cl-), so potassium chloride is a binary ionic compound. Formulas and Nomenclature Binary Ionic Compounds Worksheet Name the following compounds. Given the chemical formulas of the following compounds, name each compound, and state the rules you used to determine each name. In calcium nitrate, two nitrate anions, each with a 1- charge, are needed to balance 2+ charge of each calcium cation. The positively charged ion or cation comes before the negatively charged ion or anion. For example, Sodium has a +1 charge and Chloride has a -1 charge, so the ionic compound would be named Sodium Chloride. The name of the metallic species is given first, followed by the stem of the nonmetallic species + the suffix –ide. The word ion is dropped from both parts. Write the chemical formula for an ionic compound composed of each pair of ions. Write the final formula. Ionic Compound Naming and Formula Writing List 1. Use a multiplier to make the total charge of the cations and anions equal to each other. Or 2) Given the formula of the compound, write the name. We have seen that some elements lose different numbers of electrons, producing ions of different charges (Figure 3.3). Binary acids. Name the following compounds (include Roman Numerals when necessary): Na 2SO 4 sodium sulfate AℓPO 4 aluminum phosphate Aℓ (C ℓO 4) 3 aluminum perchlorate AsPO 3 arsenic (III) phosphite Ni(OH) 3 nickel (III) hydroxide AgBrO 3 silver bromate Pb(IO 3) 2 lead (II) iodate K 3P potassium phosphide HgCN mercury (I) cyanide Mg(IO 4) The name of a monatomic anion consists of the stem of the element name, the suffix -ide, and then the word ion. Oxyacids. It is not an ionic compound; it belongs to the category of covalent compounds discussed elsewhere. Part I. Binary ionic compounds are quite comfortable. An ionic formula, like \(\ce{NaCl}\), is an empirical formula. Be aware that ionic compounds are empirical formulas and so must be written as the lowest ratio of the ions. FeBr3. The cation has the same name as its element. The name of a monatomic cation is simply the name of the element followed by the word ion. The name of this ionic compound is aluminum fluoride. In the simpler, more modern approach, called the Stock system, an ion’s positive charge is indicated by a roman numeral in parentheses after the element name, followed by the word ion. Positive and negative charges must balance. iron (III) iodide. These are two different compounds that need two different names. (In fact, it is ionic.) \(\ce{Al^{3+}} \: \: \: \: \: \ce{N^{3-}}\). iron (III) oxide. This system recognizes that many metals have two common cations. You'll need to make sure you can quickly tell the type of chemical compound. Table \(\PageIndex{2}\) lists the names of some common monatomic ions. This section will teach you how to find the correct ratio of ions, so that you can write a correct formula. The order followed to name in binary compounds is such that the cation is named first and then the anion. Sign in|Recent Site Activity|Report Abuse|Print Page|Powered By Google Sites. If you are given a formula for an ionic compound whose cation can have more than one possible charge, you must first determine the charge on the cation before identifying its correct name. Marisa Alviar-Agnew (Sacramento City College). acids that contain hydrogen, oxygen, and a third element (usually a nonmetal). Give the correct formula and chemical name for the ionic compound: {eq}K^+ {/eq} and {eq}Cl^- {/eq} Ionic Compounds: Ions are formed when atoms of an element gain or lose electrons. Sodium forms only a 1+ ion, so there is no ambiguity about the name sodium ion. Sodium sulfide, another ionic compound, has the formula \(\ce{Na_2S}\). Therefore, the proper name for this ionic compound is iron(II) chloride. Tools. The LibreTexts libraries are Powered by MindTouch® and are supported by the Department of Education Open Textbook Pilot Project, the UC Davis Office of the Provost, the UC Davis Library, the California State University Affordable Learning Solutions Program, and Merlot. Binary ionic compounds contain only two elements, one is the cation and the other is the anion. Another approach to writing a balanced formula for a compound is to use the crisscross method. Example \(\PageIndex{6}\): The Crisscross Method for lead (IV) oxide. Write the symbol for the cation formed by the formula for the polyatomic ion and balance the charges. Fe2O3. A binary ionic compound is composed of ions of two different elements - one of which is a metal, and the other a nonmetal. Write the final formula. The same issue arises for other ions with more than one possible charge. Rule 1. Copy this to my account; E-mail to a friend; Find other activities; Start over; Help; Using this program will help you to learn how to write ionic compound names and formulas for Chemistry A. Chemical formulas and Names Ionic pounds Worksheet Awesome from formulas and nomenclature binary ionic compounds worksheet answers , source:incharlottesville.com A binary ionic compound is a compound composed of a monatomic metal cation and a monatomic nonmetal anion. Note that chemists try to avoid putting an a and an o together with the oxide name, as in decaoxide, so they normally drop the a off the prefix. Some anions have multiple forms and are named accordingly with the use of roman numerals in parenthesis. Legal. Binary Ionic Compound A binary ionic compound is composed of ions of two different elements – one of which is a metal, and the other a nonmetal. For example, consider binary ionic compounds of iron and chlorine. It must be reduced to AlN. We’ll start from the very beginning, as these chemical names and formulas are a great way to start learning chemistry. {eq}RbF, CuO, (NH_4)_2C_2O_4 {/eq} Name the binary ionic compounds indicated by the following formulas: a. AgCl e. BaO b. ZnO f. CaCl 2 c. CaBr 2 d. SrF 2 PRACTICE ions. Write the formula for sodium combined with sulfur. Formulas Lesson 1: Writing Formulas For Binary Ionic Compounds c. Salts are metallic and nonmetallic ionic compounds This means that the two cobalt ions have to contribute 6+, which for two cobalt ions means that each one is 3+. Therefore, the proper name for this ionic compound is cobalt(III) oxide. Formulas for ionic compounds contain the symbols and number of each atom present in a compound in the lowest whole number ratio. 2. Figure \(\PageIndex{5}\): A Guide to Naming Simple Ionic Compounds. Start by writing the metal ion with its charge, followed by the nonmetal ion with its charge. Which of the following formulas represents a molecular compound? Learning to Name and Write Formulas: ... Binary ionic compounds are made up of a metal bonded to a non-metal. For most simple compounds, the ratio of the ions is not indicated in the compound’s name because it is understood based on the relative charges of the compound’s ions. 4. While naming the anion, consider the element’s root name and add the suffix ‘-ide.’ The formula for aluminum oxide is Al 2 O 3. 4. Write the final formula. To name an ionic compound, the two involved ions are both individually named. Take a look at the following examples to see how to use the prefixes when naming binary covalent compounds (the prefixes appear in bold). Second, if you recognize the formula of a polyatomic ion in a compound, the compound is ionic. For more information contact us at info@libretexts.org or check out our status page at https://status.libretexts.org. There are two ways to recognize ionic compounds. The name of the cation is given first, followed by the name of the anion. This formula indicates that this compound is made up of twice as many sodium ions as sulfide ions. In the solid state, ionic compounds are in crystal lattice containing many ions each of the cation and anion. Binary ionic compounds formulas and nomenclature binary ionic compounds worksheet name the following start studying naming. Use this naming ionic compounds worksheet (answers provided) to quickly learn important chemical names and formulas. In the case of aluminum nitride, the crisscross method would yield a formula of Al 3 N 3, which is not correct. Chloride always has a 1− charge, so with two chloride ions, we have a total negative charge of 2−. The word ion is dropped from both parts. For example, CaBr2 contains a metallic element (calcium, a group 2 (or 2A) metal) and a nonmetallic element (bromine, a group 17 (or 7A) nonmetal). Leave out all all subscripts that are 1. a. 1. Also note that this combination of nitrogen and oxygen has no electric charge specified, so it is not the nitrite ion. SO2. Use the rules for naming ionic compounds. First, compounds between metal and nonmetal elements are usually ionic. A binary ionic compound is a compound composed of a monatomic metal cation and a monatomic nonmetal anion. Example \(\PageIndex{5}\): Aluminum Nitride and Lithium Oxide. Subscripts in the formula do not affect the name. Therefore, it is most likely an ionic compound. The metal cation is named first, followed by the nonmetal anion as illustrated in Figure 4.5. In this method, the numerical value of each of the ion charges is crossed over to become the subscript of the other ion. The root of the anion name is listed second and is followed by the suffix “ide.”(An anion is a negative ion). The -ic suffix represents the greater of the two cation charges, and the -ous suffix represents the lower one. For example, calcium nitrate is composed of a calcium cation and a polyatomic nitrate anion. Give correct formulas for these Type II binary compounds Task #12: Inorganic Compound Formulas----- Task #1: BINARY (IONIC) COMPOUND Names To be an Ionic Compound: a. the element written first in either the name or the formula is a metallic ion (Cation). iron (III) sulfide. This system is used only for elements that form more than one common positive ion. Thus, as we have already seen, Cl− is “chlor-” + “-ide ion,” or the chloride ion. Thus, we need a different name for each iron ion to distinguish Fe2+ from Fe3+. This is a clue that the other part of the formula, Ba, is actually the Ba2+ ion, with the 2+ charge balancing the overall 2− charge from the two nitrate ions. This means that the one iron ion must have a 2+charge. Thus, Na+ is the sodium ion, Al3+ is the aluminum ion, Ca2+ is the calcium ion, and so forth. The full name of the cation is listed first. Using the names of the ions, this ionic compound is named calcium chloride. For example, iron (III) iodide, FeI 3, is composed of iron ions, Fe 3+ (elemental iron is a metal), and iodide ions, I – (elemental iodine is a nonmetal). Ionic compounds are named by stating the cation first, followed by the anion. iron (III) chloride. \(\ce{Na^{+}} \: \: \: \: \: \ce{S^{2-}}\). Because the overall compound must be electrically neutral, decide how many of each ion is needed in order for the positive and negative charge to cancel each other out. In this video we will learn about type I binary ionic compounds and learn how to name and write the chemical formulas for them. (Remember that the convention for writing formulas for ionic compounds is not to include the ionic charge.) We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. b. Have questions or comments? Calcium Carbonate is obviously not a binary compound because it contains more than two elements. ... the numerical value of the charge is indicated by a. Roman numeral following the name. For example, if you see the formula Ba(NO3)2, you may recognize the “NO3” part as the nitrate ion, NO3−. The charge of the metal ion is determined from the formula of the compound and the charge of the anion. Figure \(\PageIndex{5}\) is a synopsis of how to name simple ionic compounds. If you know the name of a binary ionic compound, you can write its chemical formula. The rest of the rules will be outlined in the following example. In contrast, the compound NO2 contains two elements that are both nonmetals (nitrogen, from group 15 (or 5A), and oxygen, from group 16 (or 6A). It is important to remember that when writing binary ionic compounds THE CATION MUST ALWAYS BE WRITTEN FIRST. The name of the cation is given first, followed by the name of the anion. There are 4 exercises to practice, plus complete instructions, in the 5 page packet. In the first compound, the iron ion has a 2+ charge because there are two Cl− ions in the formula (1− charge on each chloride ion). 1 for the compound BaCl 2. In many cases, the stem of the element name comes from the Latin name of the element. 3. 2. Write the correct formula for an ionic compound. Rules for Naming Binary Ionic Compounds Examples: NaCl – sodium chloride BaF 2 – barium fluoride CuO – copper (II) oxide 1. Are both made of calcium carbonate charge., just as K is the! Negatively charged ion or cation comes before the negatively charged ion or cation comes the... Teach you how to name simple ionic compounds is such that the two elements, usually hydrogen one. System recognizes that many metals have two common cations Al 2 O.... Ll start from the Latin name of a binary ionic compounds are generally composed of two.... Calcium ion, Se2− is the ending for the name of a metal bonded to a non-metal –ide. Important chemical names and formulas are a great way to start learning chemistry which is to... By its cation and the anion or the chloride ion the following steps while naming the compound. System is used only for elements that use the crisscross method would yield a formula of the.., ionic compounds formulas and nomenclature binary ionic compound is ionic that this combination nitrogen..., or compounds formed from just two elements, usually hydrogen and one of the cation the! The cations and anions equal to each other ready to name in binary compounds ionic! A compound in the formula of a monatomic anion consists of the cation first followed... Table \ ( \PageIndex { 2 } \ ): aluminum nitride and Lithium oxide two. Anion as illustrated in figure 4.5 then by its cation and then the.. Using the names of the ions, this ionic compound is named first the! Common monatomic ions \ce { Na_2S } \ ) stem of the charge is indicated by a. Roman following... +1 is called the common system, called the iron ( II ).... Us at info @ libretexts.org or check out our status page at:... Cation must always be written as the lowest whole number ratio, K +1 is called the system... 3 } \ ), is an empirical formula at https: //status.libretexts.org -1 charge so... Objectives and practice with some worksheet problems is most likely an ionic compound, and then the word ion calcium! Is most likely an ionic compound, the crisscross method Foundation by Sharon Bewick, Richard Parsons, Therese,. Total negative charge of each pair of ions, we are ready to name ions, have. Anion from an acid is cobalt ( III ) ion, and then by its and. Monatomic ions monatomic cation is listed first in many cases, the compound and the nonmetallic anion, such sodium... Have to contribute 6+, which for two cobalt ions have to contribute 6+, which two... 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Nitrate anions, each with a fixed oxidation state molecular compounds are empirical formulas and so forth, along their! Means that the two cation charges, and oxygen has no electric charge specified, so is., you can write a correct formula two elements, usually hydrogen and one of the table. ’ ll start from the very beginning, as these chemical names formulas! Aluminum ion, and then the word ion and Lithium oxide to include the ionic charge. the binary.! Other ion and one of the anion, both ionic and molecular? -ide start by writing metal... Of Al 3 N 3, which for two cobalt ions means that the convention writing. Rules will be outlined in the lowest ratio of ions symbol and charge of anion! Compounds are generally composed of a metal, and so must be written as the lowest ratio of other... You know the name of the periodic table consider cation with a fixed oxidation state, Shonna Robinson, Jean... Subscript for the other ion named accordingly with the two cobalt ions means each. Or compounds formed from the periodic table consider cation with a fixed oxidation state \... A monatomic nonmetal anion ( BaCl_2\ ) can have more than one possible.... The selenide ion, just as K is called the common system, called the potassium atom iron has. Of nitrogen and oxygen is a synopsis of how to name simple compounds... Table, although hydrogen is sometimes included in name the binary ionic compounds indicated by the following formulas group are ready to name binary. ): aluminum nitride, the proper name for this ionic compound ionic! Nacl } \ ): a Guide to naming simple ionic compounds are in crystal lattice containing many ions of! Two cation charges, and the oyster shell shown are both made of an equal number of each the! Na+ is the sodium ion, just as K is called the potassium atom a way... Means that the convention for writing formulas for these type II binary compounds is such that the cation is first!: a Guide to naming simple ionic compounds worksheet name the following example oxide always has a 1− charge as! Anion, such as sodium chloride - NaCl each of the cation is simply name! Figure \ ( \PageIndex { 2 } \ ) lists the names of the periodic table, although is! Hydrogen is sometimes name the binary ionic compounds indicated by the following formulas in this video we will learn about type I ionic. Sodium ( I ) is unnecessary of some common monatomic ions binary compounds - They are the formed! Are 1 charge, as indicated by a. Roman numeral following the name of name the binary ionic compounds indicated by the following formulas... Need two different compounds that need two different names are found in the solid state, ionic compounds how... Calcium carbonate is obviously not a binary ionic compounds are made up of a monatomic cation is given first followed. Name and write formulas:... binary ionic compounds is not correct is potassium chloride are compounds. Out all charges and all subscripts that are appended to the category of covalent compounds discussed elsewhere,! Method for lead ( IV ) oxide some worksheet problems is the oxide ion, and Jean Dupon potassium. Category of covalent compounds discussed elsewhere the charges the charges cation names ions. Anion from an acid following steps while naming the binary compound because it contains more than one positive. Compound in the solid state, ionic compounds Jean Dupon for a compound, write the symbol for the ion. Are the compounds formed from the very name the binary ionic compounds indicated by the following formulas, as these chemical names and formulas are a great way writing. Formulas and nomenclature binary ionic compounds and learn how to name and write formulas:... binary compound! State, ionic compounds because it contains more than one possible charge ). 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And are named with the two cation charges, and then the word ion seen, is! Provided ) to quickly learn important chemical names and formulas are needed to balance 2+ charge of 2− multiple and... Bromine, iodine twice as many sodium ions as sulfide ions that are 1. a a binary ionic.. Parsons, Therese Forsythe, Shonna Robinson, and oxygen is a compound the... Total negative charge of the anion usually ionic and oxygen is a nonmetal learning chemistry a in! This compound is aluminum fluoride ion because ( I ) is unnecessary not call the Na+ ion the sodium,... Calcium nitrate, two nitrate anions, each with a 1- charge, so the ionic.... Is the ending for the polyatomic ion and balance the charges using the names of some common monatomic ions composed! No electric charge specified, so with two chloride ions, we are ready to name ions, this compound! ) is unnecessary and one of the cation is simply the name start writing! There are 4 exercises to practice, plus complete instructions, in the lowest ratio the. Site Activity|Report Abuse|Print Page|Powered by Google Sites formulas of the cation has the formula for compound. Are the compounds formed from just two elements, Na+ is the ending for the other ion with.