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NEET 2017
Exam
NEET
Year
2017
Subject
Chemistry
Chapter
p Block Elements (Group 15, 16, 17 & 18)

NEET 2017 · Chemistry · p Block Elements (Group 15, 16, 17 & 18)

In which pair of ions do both the species contain S - S bond?

In which pair of ions do both the species contain S−SS - S bond?In which pair of ions do both the species contain S - S bond?

Options

  1. AS2O72−,S2O32−{S}_{2}{O}_{7}^{2 -}, {S}_{2}{O}_{3}^{2 -}
  2. BS4O62−,S2O32−{S}_{4}{O}_{6}^{2 -}, {S}_{2}{O}_{3}^{2 -}
  3. CS2O72−,S2O82−{S}_{2}{O}_{7}^{2 -}, {S}_{2}{O}_{8}^{2 -}
  4. DS4O62−,S2O72−{S}_{4}{O}_{6}^{2 -}, {S}_{2}{O}_{7}^{2 -}

Correct answer

B. S4O62−,S2O32−{S}_{4}{O}_{6}^{2 -}, {S}_{2}{O}_{3}^{2 -}

Step-by-step solution

The name of the given anions:

S4O62- = Tetrathionate ion

S2O32- = Thiosulfate ion

S2O82- = Peroxydisulfate ion

S2O72- = Disulfate ion

Both S4O62−{S}_{4}{O}_{6}^{2 -} and S2O32−{S}_{2}{O}_{3}^{2 -} hasS−SS - S bond as they both occurs in salt of dithionic acid which is stable i.e.,H2S2O6{H}_{2}{S}_{2}{O}_{6} .

In which pair of ions do both the species contain S - S bond?

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