A) \[[Ar]\,3{{d}^{5}}\,4{{s}^{1}}\]
B) \[[Ar]\,3{{d}^{4}}4{{s}^{2}}\]
C) \[[AR]3{{d}^{6}}4{{s}^{0}}\]
D) \[[Ar]4{{d}^{5}}4{{s}^{1}}\]
Correct Answer: A
Solution :
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.
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