Question

What is the net charge on ferrous ion?

• A. 2
• B. 3
• C. 4
• D. 5

Answer 1

Answer: (A)

2

Answer 2

Iron has atomic number 26 Electronic configuration $=1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{2}}3{{p}^{6}}3{{d}^{6}}4{{s}^{2}}$ $F{{e}^{2+}}$ (ferric ion) $1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{2}}\,3{{p}^{6}}3{{d}^{6}}4{{s}^{0}}$ $F{{e}^{3+}}$ (ferric ion) $1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{2}}3{{d}^{6}}3{{d}^{5}}4{{s}^{0}}$