Chemistry - CHEMICAL BONDING Question with Solution | TestHub

(A) For larger size of anion thermal stability increases down the group

correct order

$\mathrm{Ca}\left({\mathrm{BeF}}_4\right)<\mathrm{Sr}\left({\mathrm{BeF}}_4\right)<\mathrm{Ba}\left({\mathrm{BeF}}_4\right)$

(B) Lewis acid order

$${\mathrm{BCl}}_3<{\mathrm{BF}}_3<AlC{l}_3$$

Size increases Vander waal forces increases which leads to increase in boiling point.

$C{\mathrm{F}}_4<C_2{F}_6<C_3{F}_8$

 boiling point

Only consider-1

(A , C & D) are correct answer.