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BITSAT Chemistry s Block Elements 2021 BITSAT 2021

BITSAT Chemistry Question (2021) — Solution

Question

Which of the following has minimum melting point?

Options

  1. A. CsF
  2. B. HCl
  3. C. HF
  4. D. LiF

Answer

B. HCl

Step-by-step solution

Ionic compounds have high melting point. Greater the ionic character, more is melting point. HCl has least ionic character because of maximum electronegativity difference between the two constituent elements, ( H and Cl ) among CsF , HCl , HF and LiF HCl has minimum melting point.

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