1.

Out of the compounds K_(2)SO_(4),MgCl_(2),FeSO_(4),NiCl_(2) and ZNO which of the following pair will show paramagnetism-

Answer»

`K_(2)SO_(4),MgCl_(2)`
`ZnO,MgCl_(2)`
`K_(2)SO_(4),ZnCl_(2)`
`FeSO_(4),NiCl_(2)`

SOLUTION :The pair which shows PARAMAGNETISM is `FeSO_(4)` and `Nicl_(2)`. It consist of `Fe^(+2)` and `Ni^(+2)` ions which have got UNPAIRED electrons. Their ELECTRONIC configs. Are as given below.


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