Question

How many atoms are present in 1 mole of oxygen gas (O₂)?

• A. \( 6.022 \times 10^{23} \)
• B. \( 1.204 \times 10^{24} \)
• C. \( 3.011 \times 10^{23} \)
• D. \( 2 \times 6.022 \times 10^{23} \)

Answer 1

The Correct Option is B

Step 1: Know that 1 mole of any gas contains 6.022 × 10²³ molecules.

Step 2: Oxygen gas (O₂) is diatomic, so 1 molecule contains 2 atoms.

Therefore, total atoms = 2 × 6.022 × 10²³ = 1.204 × 10²⁴ atoms

Answer: 1.204 × 10²⁴ atoms