Question

Cobalt ( ii) borate formula

Would there be 3 Co^-2 and 3 BO3^3 making +6 and -6

Co3 BO3 2

Answer 1

Yes, the formula for cobalt borate would be
`Co_3(BO_3)_2`

Step-by-step explanation:

The borate anion is BO3{3-}, and the cobalt(ii) ion is Co{2+}
We need the smallest integer coefficients in front of both the cation and the anion that produces the same charge.
An easy way to do this is by just looking at it.
For example, we can see that 2 borates have the same charge as 3 cobalt(ii) ions, +6 or -6.