The $3d-$ metal ions are paramagnetic in nature because
The $3d-$ metal ions are paramagnetic in nature because
- A
They are reducing agents
- B
They form coloured salts
- C
They have one or more paired $ s-$ electrons
- D
They have one or more unpaired $ d-$ electrons
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In which pair of ions both are diamagnetic in nature?
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Metals generally melt at very high temperature. Amongst the following, the metal with the highest melting point will be $......$
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- [JEE MAIN 2022]
In the first transition series, the highest $B.P. $ and $M.P.$ is of
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Invar, an alloy of $ Fe$ and $ Ni $ is used in watches and meter scale, its characteristic property is
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