Input interpretation
synthetic elements | atomic radius
Summary
median | 175 pm highest | 185 pm (promethium) lowest | 127 pm (astatine) distribution | | (based on 6 values; 23 unavailable)
Entities with missing values
curium | berkelium | californium | einsteinium | fermium | mendelevium | nobelium | lawrencium | rutherfordium | dubnium | ... (total: 23)
Plot
Plot
Periodic table location
Periodic table location
Atomic radii properties
atomic radius (empirical) | median | 175 pm | highest | 185 pm (promethium) | lowest | 135 pm (technetium) | distribution | atomic radius (calculated) | median | 183 pm | highest | 205 pm (promethium) | lowest | 127 pm (astatine) | distribution | covalent radius | median | 180 pm | highest | 199 pm (promethium) | lowest | 147 pm (technetium) | distribution |
Units
Atomic radius rankings
1 | astatine | 127 pm 2 | technetium | 135 pm 3 | americium | 175 pm 4 | plutonium | 175 pm 5 | neptunium | 175 pm 6 | promethium | 185 pm (based on 6 values; 23 unavailable)
Unit conversions for median atomic radius 175 pm
0.175 nm (nanometers)
1.75×10^-10 meters
6.89×10^-9 inches
1.75 Å (ångströms)
Comparisons for median atomic radius 175 pm
≈ 5.6 × atomic radius of helium (the smallest atom) ( ≈ 31 pm )
≈ 7 × atomic radius of hydrogen ( ≈ 25 pm )