The oxidation numbers of every atom in a neutral molecule must add up to:
ANine
BZero
CTwo
DFour
Answer & Solution
Correct answer: B. Zero
1. The rule is that the total equals the overall charge.
2. A neutral molecule carries no charge at all.
3. So the oxidation numbers sum to zero.
_Source: OpenStax Chemistry 2e, Chapter 4, Stoichiometry of Chemical Reactions._
Keep practising Stoichiometry
Browse all Stoichiometry questions for Quebec Secondaire (Uniform Exams), or explore more Chemistry topics.