1.

The lowest degree of permagnetism per mole of the compound at 298 K will be shown by

Answer»

`NiSO_(4).6H_(2)O`
`FeSO_(4).6H_(2)O`
`CuSO_(4).5H_(2)O`
`MnSO_(4).4H_(2)O`

ANSWER :C


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