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Question

Cr2+ is more easily oxidised than Ni2+.
If true enter 1, else enter 0.

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Solution

Cr2+ is more easily oxidised, than Ni2+.
Cr2+ is strongly reducing agent in nature.
The electronic configuration of Cr2+1s22s22p63s23p63d4.
It has a d4 configuration. While acting as a reducing agent, it gets oxidized to Cr3+ (electronic configuration, d3). This d3 configuration can be written as t32g configuration, which is a more stable configuration.
Ni2+ is an oxidizing agent.
Ni2+1s22s22p63s23p63d8.
It tends to accept two electrons and get reduced to achieve d10 configuration which is a more stable configuration.

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