Question

The correct order of increasing covalent character is-

• A. SiCl₄ < AlCl₃ < CaCl₂ < KCl
• B. KCl < CaCl₂ < AlCl₃ < SiCl₄
• C. AlCl₃ < CaCl₂ < KCl < SiCl₄
• D. None of these.

Answer 1

The correct option is B KCl < CaCl₂ < AlCl₃ < SiCl₄

Charge on metal cations in increasing order, $K^{+},C{a}^{2+},A{l}^{3+}andS{i}^{4+}$. Greater the cationic charge, more polarizing power of cation leading to more covalent character.