How much does an oxygen atom weigh?
2.66 × 10⁻²⁶ kgWhich one: 2.66 × 10⁻²⁶ kg
An oxygen atom has a mass of about 2.66 × 10⁻²⁶ kg.
Atomic masses converted to kilograms, for the very smallest puzzles.
How heavy is that?
- An oxygen atom weighs about as much as 16 hydrogen atoms.
- An oxygen atom weighs about as much as 29,000 electrons.
About the same weight
More atoms
- Hydrogen atom 1.67 × 10⁻²⁷ kg
- Helium atom 6.65 × 10⁻²⁷ kg
- Carbon atom 1.99 × 10⁻²⁶ kg
- Water molecule 2.99 × 10⁻²⁶ kg
- Iron atom 9.27 × 10⁻²⁶ kg
- Gold atom 3.27 × 10⁻²⁵ kg
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