Question Info

This question is public and is used in 81 tests or worksheets.

Type: Multiple-Choice
Category: Molecules and Compounds
Level: Grade 10
Author: ColinMcNaught
Last Modified: 7 years ago

View all questions by ColinMcNaught.

Molecules and Compounds Question

View this question.

Add this question to a group or test by clicking the appropriate button below.

Grade 10 Molecules and Compounds

The oxidation number of oxygen in the compound CaO is
  1. +3.
  2. 0.
  3. -1.
  4. -2.