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KVPY2020ChemistryChemical Bonding and Molecular Structure

The covalent characters of CaCl 2 BaCl 2 , SrCl 2 and MgCl 2 follow the order :

Options

  1. ACaCl 2 < BaCl 2 < SrCl 2 < MgCl 2
  2. BBaCl 2 < SrCl 2 , < CaCl 2 < MgCl 2
  3. CCaCl 2 < BaCl 2 < MgCl 2 < SrCl 2
  4. DSrCl 2 < MgCl 2 < CaCl 2 < BaCl 2

Correct answer

B. BaCl 2 < SrCl 2 , < CaCl 2 < MgCl 2

Step-by-step solution

MgCl 2 CaCl 2 SrCl 2 BaCl 2 More the polarising power of the cation, more is the covalent character. Smaller the cation, more is the polarising power. BaCl 2 < SrCl 2 < CaCl 2 < MgCl 2 (Covalent character)

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