Question
Chemistry Question on d -and f -Block Elements
Zinc and mercury do not show variable valency like d-block elements because
A
They are soft
B
Their shells are complete
C
They have only two electrons in the outermostshell
D
Their d-shells are incomplete
Answer
Their shells are complete
Explanation
Solution
Zinc and mercury donot show variable oxidation state (or valency) like other d-block elements, because their d-subshell is fully filled or complete