The answer is [Ar] 4s1 3d5
Because half-filled subshells are somewhere stable, the atom prefers to have a half-filled 4s and half-filled 3d's than a full 4s and a non-half-filled 3d subshell.
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The answer is [Ar] 4s1 3d5
Because half-filled subshells are somewhere stable, the atom prefers to have a half-filled 4s and half-filled 3d's than a full 4s and a non-half-filled 3d subshell.
Check me out: [ Ссылка ]