Which of the trichlorides is hydrolyzed most easily?

Options

A. `SbCl_(3)`
B. `NCl_(3)`
C. `AsCl_(3)`
D. `PCl_(3)`

Answer

2

Explanation

The ease of hydrolysis depends upon the tendency of the control atom to attract the lone pair of electrons from water which decreases as the electronegativity of the central atom(`E`) in `ECl_(3)` decreases down the group . Thus, the ease of hydrolysis of trichlorids decreases in the order:
`NCl_(3) gt PCl_(3) gt AsCl_(3) gt SbCl_(3) gt BiCl_(3)`