D And F Block Elements Question 312

Most stable oxidation state of iron is +2

[AFMC 1976; CPMT 1988]

Options:

A) $ +2 $

B) $ +3 $

C) $ -2 $

D) $ -3 $

Show Answer

Answer:

Correct Answer: B

Solution:

  • 3 state is most stable because of half filled d sub-shell
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