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How many of the following ions have spin...

How many of the following ions have spin mangnetic moment more than `4 B.M`.
`Ti^(3+), Cu^(+), Ni^(2+),Fe^(3+),Mn^(2+), Co^(2+)`

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Verified by Experts

The correct Answer is:
B
`{:(Ti^(3+),3d^(1),1,sqrt(2)),(Cu^(+),3d^(10),0,0),(Ni^(2+),3d^(8),2,sqrt(8)),(Fe^(3+),3d^(5),5,sqrt(35)),(Mn^(2+),3d^(5),5,sqrt(35)),(Co^(2+),3d^(7),3,sqrt(15)):}`
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