A) \[1{{s}^{2}},\,\,2{{s}^{2}}2{{p}^{6}},\,\,3{{s}^{2}}3{{p}^{6}}3{{d}^{4}},\,\,4{{s}^{2}}\]
B) \[1{{s}^{2}},\,\,2{{s}^{2}}2{{p}^{6}},\,\,3{{s}^{2}}3{{p}^{6}}3{{d}^{10}}\]
C) \[1{{s}^{2}},\,\,2{{s}^{2}}2{{p}^{6}},\,\,3{{s}^{2}}3{{p}^{6}}3{{d}^{6}}\]
D) \[1{{s}^{2}},\,\,2{{s}^{2}}2{{p}^{6}},\,\,3{{s}^{2}}3{{p}^{6}}3{{d}^{5}},\,\,4{{s}^{1}}\]
Correct Answer: D
Solution :
The electronic configuration of element with atomic number \[24\] is \[1{{s}^{2}},\,\,2{{s}^{2}},\,\,2{{p}^{6}},\,\,3{{s}^{2}},\,\,3{{p}^{6}},\,\,4{{s}^{1}},\,\,3{{d}^{5}}\] \[(\because \]Exactly half-filled orbitals are more stable than nearly half-filled orbitals.)
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