Question

write the chemical formula for cobalt(ii) oxide

Explanation:

Step1: Determine the charge of cobalt and oxygen

Cobalt(II) has a charge of \(Co^{2+}\). Oxygen in oxides has a charge of \(O^{2 -}\).

Step2: Balance the charges

To balance the charges (\(+2\) and \(-2\)), the ratio of \(Co\) to \(O\) is \(1:1\).

Answer:

\(CoO\)