Question

Bond dissociation energy of E–H bond of the “H₂E” hydrides of group 16 elements (given below), follows order. 

(A) O 

(B) S 

(C) Se 

(D) Te 

(1) A > B > C > D 

(2) A > B > D > C 

(3) B > A > C > D 

(4) D > C > B > A

Answer 1

(1) A > B > C > D 

Bond dissociation energy of E–H bond in hydrides of group 16 follows the order

H₂O > H₂S > H₂Se > H₂Te