Which of the following has lowest boiling point?

Question

Which of the following has lowest boiling point? (A) NaCl (B) CuCl (C) CuCl2 (D) CsCl

Tardigrade Admin · Accepted Answer

According to Fajan's rule, as the size of cation decrease, its polarising power increases. Hence, Cu 2+ polarise Cl -ions more than Cu +, Therefore, CuCl 2 has more covalent character and hence, its boiling point is less.

Q. Which of the following has lowest boiling point?

$N a Cl$

$C u Cl$

$C u C l_{2}$

$C s Cl$

According to Fajan's rule, as the size of cation decrease, its polarising power increases. Hence, $C u^{2 +}$ polarise Cl $^{-}$ ions more than $C u^{+}$ , Therefore, $C u C l_{2}$ has more covalent character and hence, its boiling point is less.

Q. Which of the following has lowest boiling point?

NaCl

CuCl

CuCl2​

CsCl

According to Fajan's rule, as the size of cation decrease, its polarising power increases. Hence, Cu2+ polarise Cl −ions more than Cu+, Therefore, CuCl2​ has more covalent character and hence, its boiling point is less.

$N a Cl$

$C u Cl$

$C u C l_{2}$

$C s Cl$

According to Fajan's rule, as the size of cation decrease, its polarising power increases. Hence, $C u^{2 +}$ polarise Cl $^{-}$ ions more than $C u^{+}$ , Therefore, $C u C l_{2}$ has more covalent character and hence, its boiling point is less.