First slide
Characteristics of transition elements

Magnetic moment 2.83 BM is given by which of the following ions?

(At.nos. Ti = 22, Cr = 24, Mn = 25, Ni = 28)


Magnetic moment is given by μ=n(n+2)B.M where  n =   no. of unpaired electrons 

 When n=2 , then μ=2.83 B.M. 

 For Ti3+3d1,n=1;Cr3+3d3,n=3;Ni2+3d8


Hence, Ni2+has two unpaired electrons, with magnetic moment 2.83 B.M.

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