Question

1. What is the correct name for S⁻² ion? *
Sulfite ion
Sulfide ion
Sulfate ion

Answer 1

1. What is the correct name for S⁻² ion? *
Sulfite ion
Sulfide ion
Sulfate ion

2. Sulfur ionGallium is a Group 3A metal. Which ion does Ga typically form? *
Ga⁻³
Ga⁺³
Ga⁻⁵
Ga⁺⁵

3. In which of the following are the symbol and name of the ion given correctly?(There is NO typographical error) *
NH₄⁺: ammonia; H⁺:hydride
OH⁻ : hydroxide ; O⁻² :oxide
PO₃⁻³ : phosphate ; PO₄⁻³ : phosphate
NO₃⁻ : nitrite ; N⁻³ :nitride

4.Why are systematic names preferred over common names? *
Common names were assigned by the scientist who discovered the compound

Common names are not very descriptive

Common names are derived from the method used to obtain the compound

Common names do not provide information about the chemical composition of the compound

5. Which element, when combined with fluorine, will form an ionic compound? *
oxygen
bromine
potassium
nitrogen

Answer 2

1. Sulfur ion
2. Ga^+3
3. OH⁻ : hydroxide, PO₄⁻³ : phosphate
4. Common names do not provide information about the chemical composition of the compound
5. potassium

Answer 3

Well done just fast noticed in the first question you wrote none of the options so I fast help you there:
The divalent anion of sulfur is the sulfide ion \(\textrm{S}^{2-}\).
The sulfite ion is \(\textrm{SO}_3^{-2}\) and sulfate ion is \(\textrm{SO}_4^{-2}\).

Answer 4

Sorry caught a mistake in 3) too. You are missing two.
I can say one of them of them is a nitrogen ion the other one is a oxygen ion.

Answer 5

All monatomic anions end in -ide:
fluoride
chloride
bromide
iodide
oxide
sulfide
nitride