A) \[[Xe]4{{f}^{1}}\]
B) \[[Kr]4{{f}^{1}}\]
C) \[[Xe]4{{f}^{13}}\]
D) \[[Kr]4{{d}^{1}}\]
Correct Answer: A
Solution :
Atomic number of cerium \[=58\] Electronic configuration of \[\text{Ce}\] \[=[Xe]4{{f}^{2}},5{{d}^{0}},6{{s}^{2}}\] Electronic configuration of\[C{{e}^{3+}}\] \[=[Xe]4{{f}^{1}}\]
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