Lesson: Chapter 10 — Chemical Bonds

10.2. Covalent bonds 4 of 12 Reset answers

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Question 4

Which of these molecules is held together by a triple bond?

A O₂ B N₂ C Cl₂ D H₂

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N₂. A nitrogen atom is 2, 5 and is three electrons short, so with only one partner available the two atoms must share three pairs.

O₂ has a double bond, because oxygen is only two electrons short. H₂ and Cl₂ each have a single bond, needing just one electron per atom.

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