Two Identical Iron Spheres Have Equal Positive Charges and the Force

Multiple Choice

Two identical iron spheres have equal positive charges and the force between them when they are 1 m apart is 2 N.What percentage of the electrons has been removed from each sphere if each sphere has 1 mole (6 × 10²³) of iron atoms? (k_e = 8.99 × 10⁹ N⋅m²/C²,the atomic number of iron is 26,and the electron charge is −1.6 × 10−¹⁹ C) ​

A) 0.001%
B) 0.000 002%
C) 1 × 10−⁸ %
D) 6 × 10−¹⁰ %
E) ​6 × 10−¹² %