JEE Advanced2015Chemistryd and f Block ElementsActual
The correct statement(s) about C r 2 + and M n 3 + is (are) [Atomic number of Cr = 24 and Mn = 25]
Options
- AC r 2 + is a reducing agent
- BM n 3 + is an oxidizing agent
- CBoth C r 2 + and M n 3 + exhibit d 4 electronic configuration
- DWhen C r 2 + is used as a reducing agent, the chromium ion attains d 5 electronic configuration.
Correct answer
A. C r 2 + is a reducing agent
Step-by-step solution
C r 2 + + M n 3 + ⇌ C r 3 + + M n 2 + C r 2 + is a reducing agent agent M n 3 + is an oxidizing agent both C r 2 + & M n 3 + exhibit d 4 electronic configuration.