table 2.4 common non - metal ions\nelement name element symbol ion symbol ion name\nnitrogen n n³⁻…

table 2.4 common non - metal ions\nelement name element symbol ion symbol ion name\nnitrogen n n³⁻ nitride\noxygen o o²⁻ oxide\nfluorine f f⁻ fluoride\nphosphorus p p³⁻ phosphide\nsulfur s s²⁻ sulfide\nchlorine cl cl⁻ chloride\nselenium se se²⁻ selenide\nbromine br br⁻ bromide\niodine i i⁻ iodide\nlearning check\n1. explain how ionic compounds are named.\n2. name these ionic compounds.\na) nabr b) lif c) mgbr₂ d) ali₃ e) k₂s\n3. how do you know how many of each type of element there are in an ionic compound?\n4. write the chemical formula for these ionic compounds.\na) cesium fluoride d) potassium phosphide\nb) strontium chloride e) aluminum nitride\nc) barium oxide (hint: the charges are the same)

table 2.4 common non - metal ions\nelement name element symbol ion symbol ion name\nnitrogen n n³⁻ nitride\noxygen o o²⁻ oxide\nfluorine f f⁻ fluoride\nphosphorus p p³⁻ phosphide\nsulfur s s²⁻ sulfide\nchlorine cl cl⁻ chloride\nselenium se se²⁻ selenide\nbromine br br⁻ bromide\niodine i i⁻ iodide\nlearning check\n1. explain how ionic compounds are named.\n2. name these ionic compounds.\na) nabr b) lif c) mgbr₂ d) ali₃ e) k₂s\n3. how do you know how many of each type of element there are in an ionic compound?\n4. write the chemical formula for these ionic compounds.\na) cesium fluoride d) potassium phosphide\nb) strontium chloride e) aluminum nitride\nc) barium oxide (hint: the charges are the same)

Answer

Brief Explanations:

  1. Ionic compounds are named by writing the name of the metal first, followed by the name of the non - metal with its ending changed to “-ide”. If the metal has multiple oxidation states, a Roman numeral in parentheses is used to indicate the charge of the metal ion.
    • a. Sodium bromide
    • b. Lithium fluoride
    • c. Magnesium bromide
    • d. Aluminum iodide
    • e. Potassium sulfide
  3. The subscripts in the chemical formula of an ionic compound indicate the number of each type of element. The subscript applies to the element symbol it follows. If there is no subscript, it is assumed to be 1.
    • a. CsF
    • b. SrCl₂
    • c. BaO
    • d. K₃P
    • e. AlN

Answer:

  1. Ionic compounds are named with metal first and non - metal with “-ide” ending (and Roman numerals for metals with variable oxidation states).
    • a. Sodium bromide
    • b. Lithium fluoride
    • c. Magnesium bromide
    • d. Aluminum iodide
    • e. Potassium sulfide
  3. Subscripts in the chemical formula show the number of each element.
    • a. CsF
    • b. SrCl₂
    • c. BaO
    • d. K₃P
    • e. AlN