A) \[3{{d}^{5}}4{{s}^{2}}\]
B) \[3{{d}^{8}}4{{s}^{2}}\]
C) \[3{{d}^{7}}4{{s}^{2}}\]
D) \[3{{d}^{6}}4{{s}^{2}}\]
Correct Answer: A
Solution :
[a] The element with outer electron configuration \[3{{d}^{5}}4{{s}^{2}}\] is Mn which exhibits oxidation states from + 2 to + 7.
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