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How many of the following compounds sh...

How many of the following compounds show ferrimagnetism ?
`FeO_4 , MgFe_2O_2 , NiFe_2O_4 , MnO , CrO_2`

A

1

B

2

C

3

D

4

Text Solution

Verified by Experts

The correct Answer is:
C
Ferromagnetic substances are weakly attracted by magnetic field . They become paramagnetic on heating Ferrites mainly exhibits this behaviour .
Thus, `Fe_3O_4 , MgFe_2O_4` and `NiFe_2O_4` show ferromagnetism.
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