Which one of the following does not increase while moving down the group of the periodic table?

Which one of the following does not increase while moving down the group of the periodic table?

Q. Which one of the following does not increase while moving down the group of the periodic table?

A.            Atomic radius

B.            Metallic character

C.            Valence

D.            Number of shells in an element.

Answer: Valence

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