AP EAMCET · Chemistry · Chemical Bonding and Molecular Structure
Assertion (A) Covalent character follows \(\mathrm{NaCl} < \mathrm{MgCl}_2 < \mathrm{BeCl}_2 < \mathrm{LiCl}\).
Reason (R) According to Fajan's rules, covalent character of ionic compounds increases with decrease in size of cation.
- A Both \(A\) and \(R\) are true and \(R\) is a correct explanation for \(A\).
- B Both \(A\) and \(R\) are true but \(R\) is not a correct explanation for \(\mathrm{A}\).
- C \(A\) is true but \(R\) is false.
- D \(A\) is false but \(R\) is true.
Answer & Solution
Correct Answer
(D) \(A\) is false but \(R\) is true.
Step-by-step Solution
Detailed explanation
The correct order of covalent character is \(\mathrm{NaCl} < \mathrm{LiCl} < \mathrm{MgCl}_2 < \mathrm{BeCl}_2\). The covalent character depends on small size as well as more + ve charge on cation.
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