The charge of B is + 3 and the charge of O is - 2. What is its formula?

A) B3O2

B) B2O3

C) O2B3

The formula is B2O3. The charges need to equal each other to obtain a neutral compound of no charge hence 2 B has a charge of + 6 and 3 O has a charge of - 6 to cancel out each other, resulting in a stable uncharged compound.

Option B: B2O3

In order to make a compound, it has to be neutral. We have to combine the + 3 charged and the - 2 charges until they cancel out.

The only possible compound is B2O3, since the positive charges add up to + 6 and the negative charges add up to - 6.

-T. B.