Input interpretation
hydrogen | atomic diameter
Result
50 pm (picometers)
Periodic table location
Periodic table location
Atomic radii properties
atomic radius (empirical) | 25 pm atomic radius (calculated) | 53 pm covalent radius | 31 pm van der Waals radius | 120 pm
Units
Unit conversions
0.05 nm (nanometers)
5×10^-11 meters
2×10^-9 inches
0.5 Å (ångströms)
Comparisons as diameter
≈ (4×10^-4 to 0.7) × diameter of a molecule ( 0.74 to 1000 Å )
≈ 0.81 × atomic diameter of helium (the smallest atom) ( ≈ 62 pm )