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
Correct Answer: B
Solution :
\[_{30}Zn\] and \[_{80}Hg\] have their d orbitals completely filled so they do not show any variable valency.You need to login to perform this action.
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