Question

which of the following is a diatomic molecule?
a) h₂o
b) co₂
c) o₂
d) nacl

Explanation:

A diatomic molecule consists of two atoms. Let's analyze each option:

• Option A: \(H_2O\) has three atoms (\(2\) H and \(1\) O), so it is not diatomic.
• Option B: \(CO_2\) has three atoms (\(1\) C and \(2\) O), so it is not diatomic.
• Option C: \(O_2\) has two oxygen atoms, so it is diatomic.
• Option D: NaCl is an ionic compound, not a covalent molecule.

Answer:

C. \(O_2\)