1. S₄O₆²⁻, S₂O₃²⁻ 2. S₂O₇²⁻, S₂O₈²⁻ 3. S₄O₆²⁻, S₂O₇²⁻ 4. S₂O₇²⁻, S₂O₃²⁻

Answer: 1. S₄O₆²⁻, S₂O₃²⁻ Key idea: draw the structures. mathrmS₄O₆²⁻ (tetrathionate): has an S-S bond in the chain O₃S-S-S-SO₃ . mathrmS₂O₃²⁻ (thiosulphate): one S is attached to the central S, giving an S-S bond. mathrmS₂O₇²⁻ and mathrmS₂O₈²⁻ have S-O-S and O-O bridges, with no S-S bond. So both ions in option 1 contain an S-S bond.

Topic: General trends, Group 15 and 16· p-Block Elements

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

1. \(S_4O_6^{2-}, S_2O_3^{2-}\)

2. \(S_2O_7^{2-}, S_2O_8^{2-}\)

3. \(S_4O_6^{2-}, S_2O_7^{2-}\)

4. \(S_2O_7^{2-}, S_2O_3^{2-}\)

Doubtly Asked 30 Oct 2026 NEET UG 2017 neet Save WhatsApp Report

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Answer: 1. \(S_4O_6^{2-}, S_2O_3^{2-}\)

Key idea: draw the structures.

\(\mathrm{S_4O_6^{2-}}\) (tetrathionate): has an S-S bond in the chain \(\mathrm{O_3S-S-S-SO_3}\).
\(\mathrm{S_2O_3^{2-}}\) (thiosulphate): one S is attached to the central S, giving an S-S bond.
\(\mathrm{S_2O_7^{2-}}\) and \(\mathrm{S_2O_8^{2-}}\) have S-O-S and O-O bridges, with no S-S bond.

So both ions in option 1 contain an S-S bond.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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

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