A) \[[Ar]3{{d}^{5}}4{{s}^{1}}\]
B) \[[Ar]3{{d}^{4}}4{{s}^{2}}\]
C) \[[Ar]3{{d}^{6}}\]
D) \[[Ar]3{{d}^{0}}4{{s}^{2}}4{{p}^{4}}\]
Correct Answer: A
Solution :
: Chromium (at. number = 24) has electronic configuration\[1{{s}^{2}}1{{s}^{2}}2{{p}^{6}}3{{s}^{2}}3{{p}^{6}}4{{s}^{1}}3{{d}^{5}}\].
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