Question

if a compound has the formula CaX what possible element is X ?​

Answer 1

Answer:

it can be O for oxygen

as CaO is Calcium oxide

I hope that this would help you

Answer 2

Answer:

Thus, the element X must be a divalent non-metal if it forms a compound of the formula CaX with calcium. So, the element X will be the element of group 16, which are known to be divalent and show an oxidation state of -2. Hence X can be either oxygen (O) or sulphur.

Explanation:

hope it helps you dear