The transition element that has lowest enthalpy of atomisation is?

 QUIZ :

The transition element that has lowest enthalpy of atomisation is?

(1) Zn 

(2) Cu

(3) V

(4) Fe

Key : 2

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(1) Halo Alkanes& Halo Arenes 

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Detailed Solution:

Because, Element with least number of number of unpaired electrons have lowest enthalpy of atomisation. Among given options , Zn have Zero unpaired electrons but it is NOT transition element. 

So,

Cu with lowest number of 1 unpaired electron and  transition element is with lowest Enthalpy of atomisation