Which of the following has the maximum number of unpaired electrons
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a
Mg2+
b
Ti3+
c
v3+
d
Fe+2
answer is D.
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Detailed Solution
The electronic configuration of the given ions are as follows 12Mg2+=1s2,2s22p6 (No unpaired electron) 22Ti3+=1s2,2s22p6⋅3s23p63d1 (One unpaired electron) 23V3+=1s2,2s22p63s23p63d2 (Two unpaired electrons) 26Fe2+=1s2,2s22p6,3s23p63d6 (Four unpaired electrons)