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Answer: 1. (structure 1, see figure)

Tribromooctaoxide is the neutral molecule \(\mathrm{Br_3O_8}\) with a Br-Br-Br chain. The figure shows the structure with no charges, so it must be the neutral one.

  • Structure (1): each terminal Br carries three \(=\)O, the middle Br carries two \(=\)O. Total oxygen = 3 + 2 + 3 = 8, and all atoms are neutral, matching \(\mathrm{Br_3O_8}\).
  • Structures (2), (3), (4) contain \(\mathrm{O^-}\) groups, so they are charged species or a different formal arrangement, not the neutral \(\mathrm{Br_3O_8}\).

Answer: option (1).

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