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NEET2013Chemistryd and f Block ElementsActual

Which of the following element has lowest melting point?

Options

  1. ACr
  2. BFe
  3. CNi
  4. DCu

Correct answer

D. Cu

Step-by-step solution

Cu has lowest melting point because it has lowest enthalpy of atomisation (i.e., heat required to break the metal lattice to get free atoms) among the elements. array lllll & Ni > Fe > Cr > Cu Enthalpy of atomisation : & 430 & 416 & 397 & 339 ( in kJ mol array

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