Home Chemistry D and F - Block Elements General The maximum oxidation state shown by V(Z = 2…
Chemistry D and F - Block Elements General Single Correct MCQ
Published on: August 13, 2026

The maximum oxidation state shown by V(Z = 23), Cr(Z = 24), Co(Z = 27), Sc(Z = 21) are respectively :

A
+5, +6, +3, +3
B
+3, +4, +5, +2
C
+5, +3, +2, +1
D
+4 in each case The

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Verified by Experts
The correct answer is:
A

Electron configuration of V is [Ar] 3d 3 4s 2 and thus maximum 5 electrons participate in bonding.

Electron configuration of Cr is [Ar] 3d 5 4s 1 and thus maximum 6 electrons participate in bonding.

Electron configuration of Co is [Ar] 3d 7 4s 2 . In octahedral splitting in presence of ligands, half filled has higher CFSE and thus +3 oxidation state is most stable.

Electron configuration of Sc is [Ar] 3d 1 4s 2 and thus maximum 3 electrons participate in bonding

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