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In the series Sc (Z = 21) to Zn (Z = 30), the enthalpy of atomisation of zinc is the lowest, i.e., 126 kJ mol–1. Why?

In the series Sc (Z = 21) to Zn (Z = 30), the enthalpy of atomisation of zinc is the lowest, i.e., 126 kJ mol–1. Why?

Grade:9

1 Answers

Sunil Kumar FP
askIITians Faculty 183 Points
10 years ago
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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