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The s-block Elements — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryThe s-block Elements1 Mark
MCQ
Which of the following has lowest melting point?
  • A
    $\ce{CaCl_2}$
  • B
    $\ce{CaBr_2}$
  • ✓
    $\ce{Cal_2}$
  • D
    $\ce{CaF_2}$
✓

Answer

Correct option: C.
$\ce{Cal_2}$
It is due large 'I' atom, least lattice enthalpy.

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