---
title: "An iodine-based electrolyte contains the triiodide ion, \\(\\text{I}_3^{-}\\). Each iodine atom contributes seven valence electrons, and the negative charge contributes one additional electron. Which diagram is the best Lewis representation of \\(\\text{I}_3^{-}\\), accounting for all valence electrons, allowing an expanded valence shell on the central iodine atom, and using the most favorable formal-charge arrangement?"
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url: "https://nerd-notes.com/ubq/119520/"
date_modified: "2026-08-19T12:41:03+00:00"
---

# An iodine-based electrolyte contains the triiodide ion, \(\text{I}_3^{-}\). Each iodine atom contributes seven valence electrons, and the negative charge contributes one additional electron. Which diagram is the best Lewis representation of \(\text{I}_3^{-}\), accounting for all valence electrons, allowing an expanded valence shell on the central iodine atom, and using the most favorable formal-charge arrangement?

An iodine-based electrolyte contains the triiodide ion, \(\text{I}_3^{-}\). Each iodine atom contributes seven valence electrons, and the negative charge contributes one additional electron. Which diagram is the best Lewis representation of \(\text{I}_3^{-}\), accounting for all valence electrons, allowing an expanded valence shell on the central iodine atom, and using the most favorable formal-charge arrangement?

- **A.** Diagram A
- **B.** Diagram B
- **C.** Diagram C
- **D.** Diagram D

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/119520/*