Question

whats the correct formula for

1. rubidium selenide

2. potassium phosphate
bobpursley
Rb<sub>2</sub>Se
Phosphate is PO<sub>3</sub><sup>-3</sup>
and Potassium is K<sup>+1</sup>

so what is the formula for potassium phosphate? We will be happy to critique your thinking.
DrBob222
Bob P made a tiny typo. Phosphate is PO4^-3
hannah
thanks
is it K3PO4?
DrBob222
yes