Thus, as we have already seen, Cl− is “chlor-” + “-ide ion,” or the chloride ion. When naming ionic compounds, the cation retains the same name as the element. The -ic suffix represents the greater of the two cation charges, and the -ous suffix represents the lower one. Rules for naming compounds. The word ion is dropped from both parts. Then it becomes fluoride. 1. Iron can also have more than one possible charge. Transition metals make naming and formula writing a bit more challenging. Chemical Nomenclature is the systematic naming of chemical compounds. Identify and name the anion, and change the suffix to -ide; the anion is the nonmetal. Therefore, strong bases are named following the rules for naming ionic compounds. How do we know what names to call different ionic compounds? The cation is named first, followed by the anion. Spelling counts! We encounter many ionic compounds every day, like sodium chloride, which is table salt, and sodium fluoride, which is found in toothpaste. Here are other examples of binary ionic compounds and their names: We are still talking about binary ionic compounds, but instead of an ordinary metal, we are talking about transition metals. and career path that can help you find the school that's right for you. credit by exam that is accepted by over 1,500 colleges and universities. We will consider three types: Ionic Compounds Without a Transition Metal. Naming Ionic Compounds In science, it is important to have a system that we can follow in naming things. First of all, decide if the compound is ionic, covalent-molecular or an acid. - Definition & Examples, The Activity Series: Predicting Products of Single Displacement Reactions, CSET Science Subtest II Life Sciences (217): Practice & Study Guide, CSET Science Subtest I - General Science (215): Practice & Study Guide, FTCE Earth & Space Science 6-12 (008): Test Practice & Study Guide, CSET Science Subtest II Earth and Space Sciences (219): Test Prep & Study Guide, ILTS Science - Earth and Space Science (108): Test Practice and Study Guide, UExcel Microbiology: Study Guide & Test Prep. … When you name ionic compounds, you write the name of the metal first and then the nonmetal. Fe^3+, d). \ a. Cul(s) b. Fe_2O_3(s) c. CoF_2(s) d. FeO(s). Change the ending of the nonmetal or second element by adding -ide. ClO_3^-, Based on extrapolation of your lab results, write the dissolution reaction for the ionic solids below. The process of naming ionic compounds with polyatomic ions is the same as naming binary ionic compounds. The name of FeO is iron(II) oxide or ferrous oxide. Binary ionic compounds, just like the name suggests, only have two atoms from different elements; one atom is a metal, and the other atom is a nonmetal. In this lesson, we will go over these types and the rules we must follow to name them correctly. Sociology 110: Cultural Studies & Diversity in the U.S. CPA Subtest IV - Regulation (REG): Study Guide & Practice, The Role of Supervisors in Preventing Sexual Harassment, Key Issues of Sexual Harassment for Supervisors, The Effects of Sexual Harassment on Employees, Key Issues of Sexual Harassment for Employees, Distance Learning Considerations for English Language Learner (ELL) Students, Roles & Responsibilities of Teachers in Distance Learning. [ "article:topic", "Stock system", "showtoc:no", "transcluded:yes", "source-chem-47482" ], 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, Naming Ionic Compounds with Polyatomic Ions, information contact us at info@libretexts.org, status page at https://status.libretexts.org. In many cases, the stem of the element name comes from the Latin name of the element. Transition metals are found in groups 3-12 in the periodic table. A cationis a positively charged ion 2. Write the formulas for the following compounds: ammonium chloride, gallium arsenide, beryllium bicarbonate, aluminum cyanide, ammonium sulfate, molybdenum sulfate, strontium acetate. Naming compounds have never been so simple! Change the suffix to ‘-ide,’ or use the polyatomic anion name. Example \(\PageIndex{5}\): Naming Ionic Compounds. imaginable degree, area of a. You learn by doing. lessons in math, English, science, history, and more. STUDY. (NH)4Cl, GaAs, Be(HC(O)3)2, Al(CN)3, (N(H)4)2S(O)4, Mo(S(O)4)3, Sr((C)2(H)3(O)2)2, Ca(Br)2, NaOH, Be(OH)2, ZnC(O)3, (N(H)4)2O, KOH, AgCN, calcium bromide, sodium hydroxide, beryllium hydride, zinc carbonate, ammonium oxide, potassium hydroxide, silver cyanide. Ionic compounds are named by stating the cation first, followed by the anion. The name of a monatomic anion consists of the stem of the element name, the suffix -ide, and then the word ion. 1. first two years of college and save thousands off your degree. • Write the symbol and charge of the cation first (positive ion) PLAY. In chemistry, there are different types of ionic compounds. Positive and negative charges must balance. Note: Greek prefixes are not used to indicate the number of atoms, or polyatomic ions, in the formula unit for the compound (e.g., Ca (NO3)2 is named "calcium nitrate" not "calciuim dinitrate"). Transition metal ionic compound with nonmetal anion. We do not call the Na+ ion the sodium(I) ion because (I) is unnecessary. In science, it is important to have a system that we can follow in naming things. Dr. Chan has a Ph.D. from the U. of California, Berkeley. We know that cobalt can have more than one possible charge; we just need to determine what it is. Log in or sign up to add this lesson to a Custom Course. Rules for Naming Binary Ionic Compounds Containing a Metal Ion With a Fixed Charge: A binary ionic compound is composed of ions of two different elements - one of which is a metal, and the other a nonmetal. One example is the ammonium Sulfate compound in Figure 5.7. Not any name we want like Jeff or Larry, there's rules for how to name them. One example is the ammonium Sulfate compound in Figure 5.7. succeed. 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. Practice makes perfect. Identify and name the anion; this is a nonmetal element. If the symbol for topaline is To, predict the formula of a compound that presumably would result from the reaction between magnesium and topaline, and name the compound. (Note on notation: The number after the parentheses is usually written as a subscript. More Practice With Naming . ionic compounds. As a member, you'll also get unlimited access to over 83,000 In a compound that contains monatomic ions, which of the following gets named first? After learning a few more details about the names of individual ions, you will be one step away from knowing how to name ionic compounds. Therefore, the number of cations and anions in an ionic compound must be balanced to make an electrically neutral molecule. There are different types of ionic compounds, but the general rules in naming them are: When we think of the word 'binary,' we think of the prefix 'bi-,' which means 'two.' 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The Kinetic Molecular Theory: Properties of Solids and Liquids, Quiz & Worksheet - Ionic Compound Naming Rules, Over 83,000 lessons in all major subjects, {{courseNav.course.mDynamicIntFields.lessonCount}}, Ionic Compounds: Formation, Lattice Energy and Properties, Covalent Compounds: Properties, Naming & Formation, Lewis Structures: Single, Double & Triple Bonds, Covalent Bonds: Predicting Bond Polarity and Ionic Character, Hydrogen Bonding, Dipole-Dipole & Ion-Dipole Forces: Strong Intermolecular Forces, London Dispersion Forces (Van Der Waals Forces): Weak Intermolecular Forces, Using Orbital Hybridization and Valence Bond Theory to Predict Molecular Shape, Molecular Orbital Theory: Tutorial and Diagrams, Metallic Bonding: The Electron-Sea Model & Why Metals Are Good Electrical Conductors, Intramolecular Bonding and Identification of Organic and Inorganic Macromolecules, Organic Molecules: Alkanes, Alkenes, Aromatic Hydrocarbons and Isomers, Alkynes: Properties, Uses, Formula & Examples, College Chemistry: Homework Help Resource, Biological and Biomedical The name of this ionic compound is potassium chloride. Here are a few other examples: Polyatomic ions are positively or negatively charged ions made of two or more atoms from different elements. Rules for Naming Ionic/Covalent Compounds. Here are some examples of polyatomic ions: When naming ionic compounds containing polyatomic ions, we follow the same general rule: Here are some examples of naming ionic compounds containing polyatomic anions: Ionic compounds are made of a cation (positive ion) and an anion (negative ion). The ions that make up an ionic compound are a cation, which is a positive ion, and an anion, which is a negative ion. Anion formula _. The name of this ionic compound is aluminum fluoride. Naming Ionic Compounds The outline below provides the rules for naming ionic compounds: Positive Ions. In the second compound, the iron ion has a 3+ charge, as indicated by the three Cl− ions in the formula. Google Classroom Facebook Twitter Another ionic compound, magnesium hydroxide, is made of a cation (Mg2+) and an anion (OH-). Example \(\PageIndex{3}\): Naming Ionic Compounds. Nomenclature, a collection of rules for naming things, is important in science and in many other situations.This module describes an approach that is used to name simple ionic and molecular compounds, such as NaCl, CaCO 3, and N 2 O 4.The simplest of these are binary compounds, those containing only two elements, but we will also consider how to name ionic compounds containing … 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. Let's look at FeO as an example. (When an ion consists of more than one element, we … Identify and name the cation; the cation is the metal. 1 M Mg(NO_3)_2 b. No Greek prefixes necessary here because the metal has a fixed charge and, therefore, in forming a compound, there is only one possible combination with the nonmetal. Write. i. Cation formula _ ii. Before naming a compound, you have to figure out what kind of compound it is. In chemistry, there are rules we must follow in naming ionic compounds. Try refreshing the page, or contact customer support. 6. Give the systematic names of these compounds. Ionic compounds contain a metal … Naming Compounds. covalent compounds. What is the Difference Between Blended Learning & Distance Learning? Ions (of either variety) may contain either a single element or more than one element. Identify and name the anion; this is a nonmetal element. The ions have the same magnitude of charge, one of each (ion) is needed to balance the charges. Write formulas in which the ionic charges are balanced so that a neutral molecule will have no net charge. Thus, we need a different name for each iron ion to distinguish Fe2+ from Fe3+. Spelling counts! busyfirefly. 6. In this lesson, we will learn how to name ionic compounds. This page was constructed from content via the following contributor(s) and edited (topically or extensively) by the LibreTexts development team to meet platform style, presentation, and quality: CK-12 Foundation by Sharon Bewick, Richard Parsons, Therese Forsythe, Shonna Robinson, and Jean Dupon. For binary ionic compounds (ionic compounds that contain only two types of elements), the compounds are named by writing the name of the cation first followed by the name of the anion. Study.com has thousands of articles about every Rule 4. To get 6+, three iron(II) ions are needed, and to get 6−, two phosphate ions are needed . Enrolling in a course lets you earn progress by passing quizzes and exams. just create an account. Missed the LibreFest? Sodium forms only a 1+ ion, so there is no ambiguity about the name sodium ion. Therefore, the number of cations and anions in an ionic compound must be balanced to make an electrically neutral molecule. Other examples of transition metals with two cations are shown in this table: When you name binary ionic compounds with transition metals, the rules are the same as those of binary ionic compounds. Name the nonmetal ion second. b. Which of the following solutions contains the most particles? According to naming rules, the types of compound that use prefixes in their names are (C) polyatomic ions. 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. This means that the one iron ion must have a 2+ charge. Write the ions present in solution of Pb(C_2H_3O_2)_2. Created by. These are two different compounds that need two different names. When naming ionic compounds, we follow the general rules: Identify and name the cation; this is a metal element or polyatomic cation. Already registered? The metal cation is named first, followed by the nonmetal anion as illustrated in Figure \(\PageIndex{1}\) for the compound BaCl2. By the Stock system, the names are iron(II) chloride and iron(III) chloride (Figure \(\PageIndex{2}\)). This system recognizes that many metals have two common cations. Marisa Alviar-Agnew (Sacramento City College). Identify all of the phases in your answers. Monoatomic cations take their name from the element name. Calcium chloride. Identify and name the cation; this is a metal element or polyatomic cation. Here are the principal naming conventions for ionic compounds, along with examples to show how they are used: Roman Numerals in Ionic Compound Names A Roman numeral in parentheses, followed by the name of the element, is used for elements that can form more than one positive ion. Get access risk-free for 30 days, Which of the following naming rules would apply to CaCO3. How do we know which element is a metal and which is a nonmetal? Change the suffix to '-ide,' or use the polyatomic anion name. c. Neither charge is an exact multiple of the other, so we have to go to the least common multiple of 6. We follow the same general rules we just mentioned: Let's use aluminum fluoride as an example. Get the unbiased info you need to find the right school. Ionic compounds are made of a cation (positive ion) and an anion (negative ion). For instance, sodium chloride is made of a cation (Na+) and an anion (Cl-). For instance, in biology, there are rules that scientists follow in naming species. Not sure what college you want to attend yet? What ions compose the compound magnesium phosphide? You first write the name of the metal, lithium, and then write the name of the nonmetal, adding an -ide ending so that sulfur becomes sulfide. 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