Question
Mercury is a liquid metal because
A.
it has a completely filled $$d$$ - orbital that prevents $$d{\text{ - }}d$$ overlapping of orbitals
B.
it has a completely filled $$d$$ - orbital that causes $$d{\text{ - }}d$$ overlapping
C.
it has completely filled $$s$$ - orbital
D.
it has small atomic size
Answer :
it has a completely filled $$d$$ - orbital that prevents $$d{\text{ - }}d$$ overlapping of orbitals
Solution :
The more extensive the metallic bonding of an element, the more will be its enthalpy of atomization. Due to the absence of unpaired electrons in zinc, metallic bonding is weakest and as a result, it has least enthalpy of atomization.