A) \[3{{\operatorname{d}}^{5}}4{{\operatorname{s}}^{2}}\]
B) \[3{{\operatorname{d}}^{8}}4{{\operatorname{s}}^{2}}\]
C) \[3{{\operatorname{d}}^{7}}4{{\operatorname{s}}^{2}}\]
D) \[3{{\operatorname{d}}^{6}}4{{\operatorname{s}}^{2}}\]
Correct Answer: A
Solution :
Due to the presence of maximum number of unpaired electrons element having \[(3{{d}^{5}},\,4{{s}^{2}}),\] configuration may exhibit the largest number of oxidation states in its compounds.
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