Question

What is the chemical name of the compound K2SO4? Use the list of polyatomic ions and the periodic table to help you answer.

Answer 1

Answer: Option (B) is the correct answer.

Explanation:

The given compound is $K_{2}SO_{4}$, that is, it contains potassium $(K^{+})$ and sulphate $(SO^{2-}_{4})$ ions.

Charge on a sulphate ion is -2 and charge on two potassium ions is +2. Therefore, according to cross multiplication method it results in the formation of $K_{2}SO_{4}$.

Thus, we can conclude that chemical name of the compound is potassium sulfate.

Answer 2

potassium sulfate or A because K2 is potassium and SO4 is sulfate