Zinc and mercury do not show variable valency like d-block elements be – McqOptions

MCQOPTIONS

1.	Zinc and mercury do not show variable valency like d-block elements because [RPMT 2000; MP PMT 2000]
A.	They are soft
B.	Their d- shells are complete
C.	They have only two electrons in the outermost subshell
D.	Their d-shells are incomplete
Answer» C. They have only two electrons in the outermost subshell

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