# How do you determine the electron configuration of iron?

##### 1 Answer

Dec 23, 2016

Place the 26 electrons of Iron into the electron orbitals starting from the lowest energy level to the next highest until all 26 have been used. (

#### Explanation:

1s is the lowest energy level and can hold 2 electrons.

2s is next and can hold 2 electrons total of 4

2p is next and can hold 6 electrons total of 10

3s is next and can hold 2 electrons total of 12

3p is next and can hold 6 electrons total of 18

4s is next and can hold 2 electrons total of 20

3d is next and can hold all 6 remaining electrons total 26

(3d can hold up to 10 electrons.)