Which of the following statements is not correct?

Question

$\begin{array}{1 1}\text{All the elements of Group 14 form tetrahalides with the exception of }PbI_4\\\text{All tetrahadies of elements of Group 14 are tetrahedral}\\\text{The stability of the halides of elements of Group 14 increases down the group}\\SiCl_4\text{ exhibits the phenomenon of hydrolysis}\end{array}$