Question

What is the electron configuration of a Mn atom in the ground state?

Answer 1

`[Ar] 4s^2 3d^5`

Explanation:

Mn has an atomic number of 25. Simply use this information to obtain its electronic configuration. Mn: `1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^5` or simply `[Ar] 4s^2 3d^5` .