Question

Order of Covalent bond; 

A. KF > KI; LiF > KF
B. KF < KI; LiF > KF
C. SnCl₄ > SnCl₂; CuCl > NaCl
D. LiF > KF; CuCl < NaCl
E. KF < KI; CuCl > NaCl

(1) C, E only

(2) B, C only

(3) B, C, E only

(4) A, B only

Answer 1

Correct option is (3) B, C, E only

According to Fajan's Rule,

A. KF > KI – False; LiF > KF – True

B. KF < KI – True; LiF > KF – True

C. SnCl₄ > SnCl₂ – True; CuCl > NaCl – True

D. LiF > KF – True; CuCl < NaCl – False

E. KF < KI – True; CuCl > NaCl – True