How many of the following molecules have a definite geometry?

$\begin{array}{r}{\mathrm{CCl}}_4,{ \mathrm{NH}}_3,{ \mathrm{CHCl}}_3,{ \mathrm{BF}}_2\mathrm{Cl},{ \mathrm{SO}}_3,{ \mathrm{SF}}_6,{ \mathrm{OSF}}_4, {\mathrm{PCl}}_5, {\mathrm{ClF}}_3\end{array}$

In ${\mathrm{CCl}}_4,{ \mathrm{SO}}_3,{ \mathrm{SF}}_6,{ \mathrm{PCl}}_5$ all bound atoms are located in around the core atom when the repulsive forces between them are at their lowest due to which the molecule achieves the lowest enthalpy and greatest stability result in definite geometry.

Hence, there are 4 molecules have a definite geometry.