Question

In 3d series which element has the lowest enthalpy of atomisation and why

Answer 1

$ASSALAMUALAIKUM$

Zn has no unpaired electrons in outermost orbit and so covalent bonding is not possible amongst its atoms.There is only metallic bonding in solid Zn. The net result is the weaker attractive force and lowest enthalpy of atomisation.

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Answer 2

Answer:Zinc

Explanation:

Enthalpy of atomisation means energy required to break the bond and separate it into it's relative monoatomic so ZINC has completely filled d orbital and s orbital so it is easy to separate but other has required energy to atomisation due to it's unpaired lone pair formed bond.