Question

Which of the following compaunds of elements in group iv expected to be most ionic?

• A. $PbC{l}_2$
• B. $PbC{l}_4$
• C. $CC{l}_4$
• D. $SiC{l}_4$

Answer 1

The correct option is A $PbC{l}_2$

According to fajans rule greater the charge on cation,greater would be the polarising power and greater covalent character.

$PbC{l}_2\to P{b}^{2+}$

$PbC{l}_4\to P{b}^{+4}$

$PbC{l}_2$ is ionic and $PbC{l}_4$ in covalent.

Similarly $CC{l}_4,SiC{l}_4$ are also covalent.