Chemistry - Complete P-block Question with Solution | TestHub

How many of these acids have$\mathrm{S}-\mathrm{S}$bonds?
${\mathrm{H}}_2{\mathrm{S}}_2{\mathrm{O}}_3,{\mathrm{H}}_2{\mathrm{S}}_2{\mathrm{O}}_6,{\mathrm{H}}_2{\mathrm{S}}_2{\mathrm{O}}_7,{\mathrm{H}}_2{\mathrm{S}}_2{\mathrm{O}}_8,{\mathrm{H}}_2\mathrm{S}{\mathrm{O}}_5,{\mathrm{H}}_2{\mathrm{S}}_{\mathrm{n}+2}{\mathrm{O}}_6$(polythionic acid).