The correct statement(s) about Cr2+ and Mn3+ is(are) [Atomic numbers of Cr=24 and Mn=25]
A
Cr2+ is a reducing agent
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B
Mn3+ is an oxidizing agent
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C
Both Cr2+ and Mn3+ exhibit d4 electronic configuration
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D
When Cr2+ is used as a reducing agent, the chromium ion attains d5 electronic configuration.
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Solution
The correct options are ACr2+ is a reducing agent BMn3+ is an oxidizing agent C Both Cr2+ and Mn3+ exhibit d4 electronic configuration Cr2++Mn3+⇌Cr3++Mn2+
Here, Cr2+ is a reducing agent and Mn3+ is an oxidising agent. Both Cr2+ & Mn3+ have d4 electronic configuration.