Give reasons :(a) Mn shows maximum oxidation state in 3d series of tra

1.	Give reasons :(a) Mn shows maximum oxidation state in 3d series of transition elements(b) Both Cr2+ and Mn3+ have d4 configuration but Cr2+ has reducing while Mn3+ has oxidising properties
Answer» (a) The stability of a particular oxidation state depends upon the nature of the element with which the transition metal forms the compound. Mn forms a stable oxide Mn₂O₇. This is probably due to the ability of the oxygen to form multiple bond in the oxides. (b) Cr⁺² = [Ar] 4s⁰3d⁴ Mn⁺³ = [Ar]4s⁰3d⁴ For Cr, +3 oxidation state is more common

Give reasons :(a) Mn shows maximum oxidation state in 3d series of transition elements(b) Both Cr2+ and Mn3+ have d4 configuration but Cr2+ has reducing while Mn3+ has oxidising properties

Answer»

(a) The stability of a particular oxidation state depends upon the nature of the element with which the transition metal forms the compound. Mn forms a stable oxide Mn₂O₇. This is probably due to the ability of the oxygen to form multiple bond in the oxides.

(b) Cr⁺² = [Ar] 4s⁰3d⁴

Mn⁺³ = [Ar]4s⁰3d⁴

For Cr, +3 oxidation state is more common

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Give reasons :(a) Mn shows maximum oxidation state in 3d series of transition elements(b) Both Cr2+ and Mn3+ have d4 configuration but Cr2+ has reducing while Mn3+ has oxidising properties

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