Question

10 multiple choice 10 points what is the name for fe(no₂)₂? iron (iii) nitrite iron (ii) nitride iron (ii) nitrite iron (ii) nitrate

Explanation:

• Determine the charge of iron (Fe):
• The nitrite ion (\(NO_{2}^{-}\)) has a charge of \(- 1\).
• In \(Fe(NO_{2})_{2}\), there are 2 nitrite ions. So the total negative charge is \(2\times(-1)=-2\).
• For the compound to be neutral, the charge of Fe must be \(+2\) (since the sum of positive and negative charges in a neutral compound is zero). So iron has a \(+2\) oxidation state, and we use "iron (II)" in the name.
• Identify the anion:
• The anion is \(NO_{2}^{-}\), which is the nitrite ion. The nitrate ion is \(NO_{3}^{-}\) and the nitride ion is \(N^{3 -}\).

Answer:

iron (II) nitrite