AIPMT | 2015d and f-Block ElementsEasy
Question
Magnetic moment 2.84 B.M. is given by :-
(At. nos, Ni = 28, Ti = 22, Cr = 24, Co = 27)
(At. nos, Ni = 28, Ti = 22, Cr = 24, Co = 27)
Options
A.Ti3+
B.Cr2+
C.Co2+
D.Ni2+
Solution
Ni+2 = 3d8 
number of unpaired electrons (n) =2
∵
hence m = 2.8 B.M., paramagnetic
number of unpaired electrons (n) =2
∵
hence m = 2.8 B.M., paramagnetic
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