Answer:
(i) In interatomic metallic bonding (n-1) d electrons in
addition to ns electrons are involved. Greater the number of
valence electrons stronger
the resultant bonding.
Very high heat of atomisation as all unpaired electrons interatomic
bonding.
Thus, transition elements exhibit higher enthalpy of
atomisation. [1]
(ii) Zn[Ar]3d10 4s2
All the (n-1) d electrons are paired hence interatomic
bonding is least in zinc. Thus, enthalpy of atomisation is also least.
[1]
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