Chemical Bonding And Molecular Structure Question 472

Question: Which of the following has been arranged in order of increasing covalent character-

Options:

A) $ KCl<CaCl_2<AlCl_3<SnCl_4 $

B) $ SnCl_4<AlCl_3<CaCl_2<KCl $

C) $ AlCl_3<CaCl_2<KCl<SnCl_4 $

D) $ CaCl_2<SnCl_4<KCl<AlCl_3 $

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Answer:

Correct Answer: A

Solution:

  • According to Fajan’s rule Covalent character $ \propto $ charge on cation or anion Thus, the correct order is

    $ {K^{+}}<C{a^{2+}}<A{l^{3+}}<S{n^{4+}} $ $ KCl<CaCl_2<AlCl_3<SnCl_4 $



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