Which of the following is incorrect statement?

• Correct answer
  A

  $\mathrm{P}\mathrm{b}{\mathrm{F}}_4$ is covalent in nature
• B

  $\mathrm{S}\mathrm{i}\mathrm{C}{\mathrm{l}}_4$ is easily hydrolysed
• C

  $\mathrm{G}\mathrm{e}{\mathrm{X}}_4\left(\mathrm{X}=\mathrm{F},\mathrm{C}\mathrm{l},\mathrm{B}\mathrm{r},\mathrm{I}\right)$ is more stable than $\mathrm{G}\mathrm{e}{\mathrm{X}}_2$
• D

  $\mathrm{S}\mathrm{n}{\mathrm{F}}_4$ is ionic in nature

Hence, the correct answer is option: 'A'.