Home Chemistry D and F - Block Elements Electronic Configuration of the D-Block Elements Zinc and mercury do not show variable valenc…
Chemistry D and F - Block Elements Electronic Configuration of the D-Block Elements Single Correct MCQ
Published on: August 12, 2026

Zinc and mercury do not show variable valency like d-block elements because

A
They are soft
B
Their d-shells are complete
C
They have only two electrons in the outermost sub shell
D
Their d-shells are incomplete

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The correct answer is:
B

Zinc and mercury have completely filled orbitals, hence they do not show any variable valency.

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