Question

6 multiple choice 10 points what is the name for co₃n₂? cobalt (iii) nitrite cobalt (iii) nitride cobalt (ii) nitrate cobalt (ii) nitride

Explanation:

• First, determine the charge of cobalt (\(Co\)). In \(Co_3N_2\), nitrogen (\(N\)) has a charge of \(-3\) (as it is nitride, \(N^{3 -}\)). Let the charge of \(Co\) be \(x\). Using the formula for charge balance in a compound (\(3x+2\times(- 3)=0\)), we solve \(3x - 6 = 0\), so \(x = + 2\).
• Then, identify the anion. The anion is \(N^{3-}\), which is nitride (not nitrite \(NO_2^{-}\) or nitrate \(NO_3^{-}\)).

Answer:

cobalt (II) nitride