question_answer

The number of unpaired electron in\[M{{n}^{2+}}\]is

A)  4                                            

B)  5

C)  6                                            

D)  7

Correct Answer: B

Solution :

                 \[Mn=(25)=3{{d}^{5}}4{{s}^{2}}\] \[M{{n}^{2+}}=\] Five unpaired electrons are present in d subshell of\[M{{n}^{2+}}\].