Stability of Fully Filled and Half Filled Orbitals
The correct g...
Question
The correct ground state electronic configuration of chromium atom is
A
[Ar]3d54s1
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B
[Ar]3d4s2
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C
[AR]3d64s0
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D
[Ar]4d54s1
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Solution
The correct option is A
[Ar]3d54s1
3d subshell filled with 5 electrons (half-filled) is more stable than that filled with 4 electrons. 1, 4s electrons jumps into 3d subshell for more sability.