Question

what is the formula for cobalt(ii) nitride? co^{+2} n^{-3} c_{3}n_{2} co_{3}n_{2} co_{2}n_{3} co_{2}n

Explanation:

Step1: Determine the charges

Cobalt has a charge of \(+2\) (\(Co^{+2}\)) and nitrogen has a charge of \(-3\) (\(N^{-3}\)).

Step2: Find the least common multiple

The least common multiple of \(2\) and \(3\) is \(6\).

Step3: Calculate the number of ions

For cobalt: \(\frac{6}{2}=3\). For nitrogen: \(\frac{6}{3} = 2\).

Answer:

\(Co_3N_2\) (the second option)