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  3. Chemistry
  4. Assertion [ Ni ( CO )4] is a diamagnetic complex. Reason All the electrons in the complex are paired.

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Q. Assertion $\left[ Ni ( CO )_{4}\right]$ is a diamagnetic complex.
Reason All the electrons in the complex are paired.

AIIMSAIIMS 2014

Solution:

In nickel carbonyl, nickel is in zero oxidation state and contains no unpaired electrons.