Arrange the following as stated :
Increasing order of the extent of hydrolysis :
`C Cl_4, MgCl_2, AlCl_3, PCl_3, PCl_5, SiCl_4`.

Explanation

`C Cl_4 lt MgCl_2 lt AlCl_3 lt PCl_5 lt SiCl_4`
Increasing order of the extent of hydrolysis.
`C Cl_4` does not get hydrolysed because carbon does not have vacant d-orbitals, so water cannot donate lone pair of electrons to start the reaction.