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