D and f block
Solution
The atomic number of iron is 26.
The electronic configuration is [Ar]3d6 4s2.
The electronic configuration of Fe2+ ion is [Ar]3d6.
The electronic configuration of Fe3+ ion is [Ar]3d5.
The Fe2+ ion will act as reducing agent and itself gets oxidised to Fe3+ state because in Fe3+ state, iron has stable half filled d-orbital configuration.
Therefore, both Assertion and Reason are correct and Reason is correct explanantion of Assertion.
The atomic number of iron is 26.
The electronic configuration is [Ar]3d6 4s2.
The electronic configuration of Fe2+ ion is [Ar]3d6.
The electronic configuration of Fe3+ ion is [Ar]3d5.
The Fe2+ ion will act as reducing agent and itself gets oxidised to Fe3+ state because in Fe3+ state, iron has stable half filled d-orbital configuration.
Therefore, both Assertion and Reason are correct and Reason is correct explanantion of Assertion.