Question

12.) $ce{niso_{4}}$ (1 point)
$\bigcirc$ nickel (i) sulfate
$\bigcirc$ nickel (ii) sulfate
$\bigcirc$ nickel sulfur oxide
$\bigcirc$ nickel (iv) sulfate
$\bigcirc$ nickel (ii) sulfide

Explanation:

1. Identify the polyatomic ion: $\text{SO}_4^{2-}$ is the sulfate ion, eliminating options with "sulfur oxide" or "sulfide".
2. Find the charge of the nickel ion: The compound is neutral, so the nickel charge balances the 2- charge of sulfate. Nickel must have a +2 charge, written as (II) in IUPAC nomenclature.

Answer:

Nickel (II) Sulfate