8.2     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?

Answers (2)
M manish

The enthalpy of atomisation of zinc is lowest due to the absence of an unpaired electron, which is responsible for metallic bonding in the elements. Therefore, the inter-atomic bonding is weak in zinc(Zn). Hence it has a low enthalpy of atomisation.

M manish

The enthalpy of atomisation of zinc is lowest due to the absence of unpaired electron,which ie responsible formetallic bonding in the elements.Therefore, the inter-atomic bonding is weak in zinc(Zn). Hence it has low enthalpy of atomisation.

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