What is the ionic charge for the cobalt ion in CO₃N₂?

Question

Quizplus · Accepted Answer

The compound CO₃N₂ is a polyatomic ion and it has an overall charge of 2-. In order to find the ionic charge of the cobalt ion, we need to set up an equation using the charges of the other ions in the compound. The formula is:

charge of cobalt ion + 3 (charge of oxygen ion) + 2 (charge of nitrogen ion) = -2

Let x be the charge of cobalt ion, then the equation is:

x + 3(-2) + 2(-3) = -2
x - 6 - 6 = -2
x = 2

Therefore, the ionic charge of the cobalt ion in CO₃N₂ is 2+, which is answer choice C.

What Is the Ionic Charge for the Cobalt Ion in CO₃N₂