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Helium atom vs Hydrogen atom vs Hydrogen fluoride molecule vs…

This comparison shows 12 objects drawn to scale. Drag the view to rotate it, or add your own items to the comparison.

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Size comparison of Helium atom (0 × 0 × 0 nm), Hydrogen atom (0 × 0 × 0 nm), Hydrogen fluoride molecule (0 × 0 × 0 nm), Carbon monoxide molecule (0 × 0 × 0 nm), Ammonia molecule (0 × 0 × 0 nm), Hydrogen Chloride molecule (0 × 0 × 0 nm), and 6 more, drawn to scale
Dimensions (height × width × depth)
ObjectAs enteredCentimetresInches
Helium atom0 × 0 × 0 nm0 × 0 × 0 cm0 × 0 × 0 in
Hydrogen atom0 × 0 × 0 nm0 × 0 × 0 cm0 × 0 × 0 in
Hydrogen fluoride molecule0 × 0 × 0 nm0 × 0 × 0 cm0 × 0 × 0 in
Carbon monoxide molecule0 × 0 × 0 nm0 × 0 × 0 cm0 × 0 × 0 in
Ammonia molecule0 × 0 × 0 nm0 × 0 × 0 cm0 × 0 × 0 in
Hydrogen Chloride molecule0 × 0 × 0 nm0 × 0 × 0 cm0 × 0 × 0 in
Oxygen atom0 × 0 × 0 nm0 × 0 × 0 cm0 × 0 × 0 in
Carbon atom atom0 × 0 × 0 nm0 × 0 × 0 cm0 × 0 × 0 in
Hydrogen Bromide Molecule0 × 0 × 0 nm0 × 0 × 0 cm0 × 0 × 0 in
Sulfur Monoxide molecule0 × 0 × 0 nm0 × 0 × 0 cm0 × 0 × 0 in
Ozone molecule0 × 0 × 0 nm0 × 0 × 0 cm0 × 0 × 0 in
Hydrogen iodide molecule0 × 0 × 0 nm0 × 0 × 0 cm0 × 0 × 0 in
Bounding-box volumes as bars: Helium atom 1.8 × 10<sup>−28</sup> mm³, Hydrogen atom 2.4 × 10<sup>−28</sup> mm³, Hydrogen fluoride molecule 7.8 × 10<sup>−28</sup> mm³, Carbon monoxide molecule 1.4 × 10<sup>−27</sup> mm³, Ammonia molecule 2.1 × 10<sup>−27</sup> mm³, Hydrogen Chloride molecule 2.1 × 10<sup>−27</sup> mm³, Oxygen atom 2.3 × 10<sup>−27</sup> mm³, Carbon atom atom 2.4 × 10<sup>−27</sup> mm³, Hydrogen Bromide Molecule 2.8 × 10<sup>−27</sup> mm³, Sulfur Monoxide molecule 3.2 × 10<sup>−27</sup> mm³
Bounding-box volume*
ObjectVolumevs smallest
Helium atom1.8 × 10−28 mm³1×
Hydrogen atom2.4 × 10−28 mm³1.4×
Hydrogen fluoride molecule7.8 × 10−28 mm³4.4×
Carbon monoxide molecule1.4 × 10−27 mm³8.2×
Ammonia molecule2.1 × 10−27 mm³12×
Hydrogen Chloride molecule2.1 × 10−27 mm³12×
Oxygen atom2.3 × 10−27 mm³13×
Carbon atom atom2.4 × 10−27 mm³14×
Hydrogen Bromide Molecule2.8 × 10−27 mm³16×
Sulfur Monoxide molecule3.2 × 10−27 mm³18×
Ozone molecule3.4 × 10−27 mm³19×
Hydrogen iodide molecule3.6 × 10−27 mm³21×

* Height × width × depth of the box each object fits in, not the object's own volume. Multiples are against the smallest box here, Helium atom.

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