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What are the names of the ions Ba2+, Sn2+, and Se2-?

What is the formula for copper(II) nitrate?            (a) CuNO3      (b) Cu2NO3     (c) CuNO2      (d) Cu2NO2     (e) Cu(NO3)2

The chemical formula for calcium nitride is A) Ca3N2 B) CaN2 C) Ca(NO3)2 D) Ca(NO2)2  

Which one of the following is expected to exhibit resonance? A) CO2 B) HCN C) NO2- D) NH4+

Which of the following is the correct chemical formula for a molecule of bromine? A) Br B) Br+ C) Br2 D) Br-

What is the molecular formula for hydrogen peroxide?               (a) H2O           (b) H2SO4       (c) H3O2          (d) H2O2         (e) H2O3

What is the molecular geometry around the central atom in the following molecular model of CCl4?

Which of the following are allowed resonance forms of NCS-? I and II and III and

The compound, NO2, is named

What is the formula for manganese(III) oxide?               (a) MgO          (b) MnO          (c) MnO4         (d) Mg2O3       (e) Mn2O3