A) \[3{{d}^{6}},\text{ }4{{s}^{1}}\]
B) \[3{{d}^{5}},\text{ }4{{s}^{2}}\]
C) \[3{{d}^{5}},\text{ }4{{s}^{1}}\]
D) \[3{{d}^{6}},\text{ }4{{s}^{0}}\]
Correct Answer: C
Solution :
\[Cr(24)=1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{6}}3{{d}^{5}},4{{s}^{1}}\] So, stable electronic configuration is\[3{{d}^{5}},4{{s}^{1}}\]
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