whats the correct formula for

Question

1. rubidium selenide

2. potassium phosphate

Answer 1

Rb₂Se
Phosphate is PO₃^-3
and Potassium is K⁺¹

so what is the formula for potassium phosphate? We will be happy to critique your thinking.

Answer 2

Bob P made a tiny typo. Phosphate is PO4^-3

Answer 3

thanks
is it K3PO4?

Answer 4

yes