Atomic number of Mn is 25 what is the electronic configuration in the

1.	Atomic number of Mn is 25 what is the electronic configuration in the ground state________________?
A.	1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁷
B.	1s² 2s² 2p6 3s² 3p⁶ 4s² 4p⁵
C.	1s² 2s² 2p⁶ 3s² 3p⁵ 3d10
D.	1s² 2s² 2p⁶ 3s² 3p⁶ 4s²3d⁵
Answer» E.

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