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Q.

The electronic configuration (outermost) of Mn+2 ion (atomic number of Mn = 25 ) in its ground state is

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a

3d5,4s0

b

3d3,4s2

c

3d2 ,4s2 4p2

d

3d4,4s1

answer is A.

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Detailed Solution

 25Mn=[Ar]3d54s2       Mn2+=[Ar]3d54s0

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