question_answer

Identify the correct sequence of increasing number of a bonds in the structures of the following molecules: I. \[{{H}_{2}}{{S}_{2}}{{O}_{6}}\]                               II. \[{{H}_{2}}S{{O}_{3}}\] III. \[{{H}_{2}}{{S}_{2}}{{O}_{5}}\]

A)  I, II, III                 

B)  II, III, I

C)  II, I, III                 

D)  I, III, II

Correct Answer: B

Solution :

                 Structure of \[{{\text{H}}_{\text{2}}}\text{S}{{\text{O}}_{\text{3}}}\]is So, the correct order of increasing number of bonds is II, III, I