The ground state electron configuration of Fe is .
A) 1s 2 2s 2 3s 2 3p 10
B) 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2
C) 1s 2 2s 2 2p 6 3s 2 3p 6 3d 6 4s 2
D) 1s 2 2s 2 3s 2 3p 6 3d 6
E) 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 4d 6

Question

The ground state electron configuration of Fe is .
A) 1s 2 2s 2 3s 2 3p 10 
B) 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 
C) 1s 2 2s 2 2p 6 3s 2 3p 6 3d 6 4s 2 
D) 1s 2 2s 2 3s 2 3p 6 3d 6 
E) 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 4d 6

Quizplus · Accepted Answer

The ground state electron configuration of iron (Fe) is [Ar] 3d^6 4s^2, which corresponds to the configuration given in choice C.

The Ground State Electron Configuration of Fe Is