Incorrect match is
`H_(2)S_(2)O_(7)` S-O-S linkage
`H_(2)SO_(5) ` O-O linkage
`H_(2)S_(2)O_(3)` S=S linkage
`H_(2)S_(2)O_(6)` S-0-S linkage

Draw structure H_(2)S_(2)O_(4)

H_(2)underline(S_(2))O_(7)+H_(2)O to H_(2)SO_(4)

H_(2)underline(S_(2))O_(7)+H_(2)O to H_(2)SO_(4)

Number of S-S bond is H_(2)S_(n)O_(6) :

Number of S-S bond in H_(2)S_(n)O_(6) is :

How many of these acids have S-S bonds? H_(2)S_(2)O_(3), H_(2)S_(2)O_(6), H_(2)S_(2)O_(7), H_(2)S_(2)O_(8), H_(2)SO_(5), H_(2)S_(n+2)O_(6) . (polythionic acid).

Equation H_(2)S+H_(2)O_(2) rarr S+2H_(2)O represents

The oxidation state of S in H_(2)S_(2)O_(8) is

In the reaction. H_(2)S+H_(2)O_(2) rarr S+2H_(2)O describes

Identify the product of the given reaction: (a) AgBr + 2Na_(2)S_(2) O_(3) rarr " " (b) H_(2)SO_(4) ("dil") + Na_(2)S_(2)O_(3) rarr " " (c) H_(2)SO_(4) ("conc.") + Na_(2)S_(2)O_(3)