A) \[[Ar]3{{d}^{4}}\,4{{s}^{2}}\]
B) \[[Ar]3{{d}^{3}}\,4{{s}^{0}}\]
C) \[[Ar]3{{d}^{2}}\,4{{s}^{1}}\]
D) \[[Ar]3{{d}^{5}}\,4{{s}^{1}}\]
Correct Answer: B
Solution :
\[Cr(24):[Ar]\,\,3{{d}^{5}}\,\,4{{s}^{1}}\] \[C{{r}^{3+}}:[Ar]\,\,3{{d}^{3}}\,\,4{{s}^{0}}\]
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