# Which one of the following metal oxides is antiferromagnetic in nature

1. A

${\mathrm{MnO}}_{2}$

2. B

${\mathrm{TiO}}_{2}$

3. C

${\mathrm{VO}}_{2}$

4. D

${\mathrm{CrO}}_{2}$

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### Solution:

Antiferromagnetic substance are those substance whose spins are aligned in such a way that the total net moment will be zero. Spins of antiferromagnetic compounds are aligned in opposite direction with respect to the neighboring spin.

${\mathrm{MnO}}_{2}$ is antiferromagnetic.

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