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| 1. |
In the series Sc (Z=2) to Zn (Z=30), the enthalpy of atomisation of zinc is the lowest, i.e., 126kJ mol^(-1). Why? |
| Answer» SOLUTION :In zinc, the d-electrons are not involved in a metallic bonding as d-orbitals are OCCUPIED completely, while in all other elements in first transition series, d-electrons participates in metallic bonding. So, Zn hs LOWEST enthalpy of ATOMISATION | |