What is the correct name of a compound having the formula Cr2O3?           (A) Chromium oxide;                                         (B) Dichromium trioxide;           (C) Chromium(II) oxide;                        (D) Chromium(III) oxide

Write the formula of each compound, and determine its mo-lecular (formula) mass: (a) ammonium sulfate; (b) sodium dihy-drogen phosphate; (c) potassium bicarbonate.

Each of the following names is incorrect. Give the correct names. (a)    CrCl2, chromium(I) chloride(b)    Zn(NO3)2, zinc(II) nitrate(c)    CrN, chromium(I) nitride

Which acid has an incorrect name?            (A) H2SO3 = sulfurous acid           (B) HClO3 =  chlorous acid           (C) H2CO3 = carbonic acid           (D) HNO3 = nitric acid

Which of the following compound names or formulas contains a mistake? 1) Fe(OH)2; Iron(II) hydroxide 2) BaCO3; Barium carbonate 3) AgC2H3O2; Silver acetate 4) Mg3PO4; Magnesium phosphate

Ionic Compounds: Names and Formulas Worksheet 1. Write the formulas for the following compounds. (a) magnesium oxide (b) sodium fluoride (c) aluminum nitride (d) potassium sulfide (e) lithium iodide (f) calcium bromide (g) beryllium oxide (h) nickel chloride (i) magnesium nitride (j) aluminum sulfide 2. Write the names for the following compounds. (a) Li₂O (b) AICI, (c) MgS (d) Ca0 (e) KBr (f) BeF (g) Na N (h) Al₂0₁ (i) CuCl₂ (j) Febr, (k) copper(1) bromid (1) tin(II) iodide (m) iron(II) chloride (n) calcium phosphide (o) lead(II) oxide (p) lead(IV) fluoride (q) tin(IV) bromide (r) copper(II) sulfide (s) iron(II) oxide (t) calcium nitride (k) PbS (1) SnO₂ (m) Na₂S (n) Mg3P 2 (0) NiO (p) Cul (q) PbCl₂ (r) FeP (s) CaF₂ (t) K,P

How many protons, neutrons, and electrons, respectively, are present in the ionic species 19779Au3+?           (A) 79, 197, 76;                          (B) 79, 118, 3;                           (C) 76, 118, 79;                          (D) 79, 118, 76;

What is the IUPAC name of Sn(CO2)2 is it Tin(II) carbonate?

Which of the following is an ionic compound?   (A) (NH4)3PO4 (B) H3PO4 (C) SiCl4 (D) PCl5   (E) All of them are

Predict whether the following compounds are ionic or molecular:(a) KI, the compound used as a source of iodine in table salt(b) H2O2, the bleach and disinfectant hydrogen peroxide(c) CHCl3, the anesthetic chloroform(d) Li2CO3, a source of lithium in antidepressants