Question

6 multiple choice 15 points what is the name for fe(no₂)₂? iron (iii) nitrite iron (ii) nitride iron (ii) nitrate iron (ii) nitrite

Explanation:

• First, identify the cation and anion. The cation is \(Fe^{2 +}\) (since the compound is \(Fe(NO_2)_2\), and the charge on \(NO_2^-\) (nitrite ion) is \(- 1\). Using the formula \(n\times\) (cation charge) \(+m\times\) (anion charge) \(=0\) (where \(n = 1\) for \(Fe\) and \(m = 2\) for \(NO_2^-\)), we get \(x+2\times(-1)=0\), so \(x = + 2\), so the iron has a \(+2\) charge, which is written as iron (II) in the name.
• The anion \(NO_2^-\) is the nitrite ion. The nitrate ion is \(NO_3^-\) and nitride ion is \(N^{3-}\).

Answer:

iron (II) nitrite