Which Molecule or Ion Has a Bond Order of 2

question 13

Multiple Choice

Which molecule or ion has a bond order of 2.5?

• A)O₂
• B)O₂⁺
• C)NO^-
• D)O₂^2-
• E)O₂^-

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Definitions:

Bond Dissociation Energy

The amount of energy needed to fracture a particular chemical bond within a mole of gas-phase molecules.

C-H Bonds

A chemical bond formed between a carbon atom and a hydrogen atom, prevalent in organic molecules and important for the structure of hydrocarbons.

ΔS°

Standard entropy change, representing the change in entropy in a system when one mole of a compound is formed under standard conditions (298 K, 1 atm).

Hydrogenation

A chemical reaction where hydrogen is added to organic compounds, often requiring a catalyst.