Question
Match the metal ions given in Column I with the spin magnetic moments of the ions given in Column II and assign the correct code :
Column I Column II
a. Co3+ i. B.M.
b. Cr3+ ii. B.M.
c. Fe3+ iii. B.M.
d. Ni2+ iv. B.M.
v. B.M.
Options
a b c d
iv v ii i
a b c d
i ii iii iv
a b c d
iv i ii iii
a b c d
iii v i ii
Solution
Magnetic momentB.M.
(a)Â Co3+ 1s2 2s2 2p6 3s2 3p6 4s0 3d6
                
                                   n = 4
  B. M
(b) Cr+3Â 1s2 2s2 2p6 3s2 3p6 4s0 3d3
                                       
                                                    n = 3
(c) Fe+3Â 1s2 2s2 2p6 3s2 3p6 4s0 3d5
                                   
                                               n = 5
(d) Ni+3Â 1s2 2s2 2p6 3s2 3p6 4s0 3d8
                                       
                                                              n = 2
                                                 Â
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