1.

The d-electron configuration of Cr^(2+), Mn^(2+),Fe^(2+) and Co^(2+)are d^4, d^5,d^6 and d^7 respectively. Which one of the following will exhibit minimum paramagnetic behaviour ? (At. Nos. Cr=24 , Mn=25 , Fe=26 , Co=27)

Answer»

`[CR(H_2O)_6]^(2+)`
`[MN(H_2O)_6]^(2+)`
`[FE(H_2O)_6]^(2+)`
`[CO(H_2O)_6]^(2-)`

ANSWER :D


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