Question

What are the charges of oxide, and fluoride anions?

Answer 1

Which charge do you mean? Electronic charge, or nuclear charge?

Explanation:

Clearly, `"oxide anion,"` `O^(2-)`, is a doubly charged anion, whereas `F^-` is singly charged. But both anions have the same number of electrons.

Nevertheless, fluoride anion has a higher `"nucular charge"`, `Z=9` versus `Z=8`.