Question

Which of the following represents a correct chemical formula?

1. Bi2(PO4)3
2. BiPO4
3. Bi3(PO4)2
4. Bi(NO3)2

and also please uderstand

Answer 1

second number is the correct answer

Answer 2

Second one is the correct answer.

BiPO4

This is so beacuse the valency of Bismuth (Bi) and Phophate(PO4) is ( 3 )(ignore the positive and negative signs) and the same number is cancelled while writing the valency.