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प्रश्न
Which element of 3d series has lowest enthalpy of atomisation and why?
लघु उत्तरीय
उत्तर
Increasing the number of unpaired electrons leads to stronger bonding and a higher enthalpy of atomisation. In the 3d series, from \[\ce{Sc}\] to \[\ce{Zn}\], there are no unpaired electrons. Due to its weak contacts, it has the lowest enthalpy of atomisation.
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