Chemistry - Complete Pblock- Question with Solution | TestHub

CCl₄ is kinetically inert (small carbon sterically screened by four Cl atoms, complete octet, no low-lying acceptor orbital for water), while NCl₃ hydrolyses (attack at Cl, giving NH₃ and HOCl); hence CCl₄ > NCl₃ is incorrect. NF₃ is inert while NCl₃ hydrolyses; SiCl₄ hydrolyses faster than SiF₄ (coordination expansion through a 5-coordinate intermediate is easier for the larger, less screened Si-Cl system - the older "vacant d-orbital" phrase is only a simplified label for this); BCl₃ hydrolyses completely while BF₃ hydrolyses only partially (stable BF₄⁻ formation).