Input interpretation
actinium | atomic radius
Result
195 pm (picometers)
Periodic table location
Periodic table location
Atomic radii properties
atomic radius (empirical) | 195 pm covalent radius | 215 pm
Units
Unit conversions
0.195 nm (nanometers)
1.95×10^-10 meters
7.68×10^-9 inches
1.95 Å (ångströms)
Comparisons as atomic radius
≈ 6.3 × atomic radius of helium (the smallest atom) ( ≈ 31 pm )
≈ 7.8 × atomic radius of hydrogen ( ≈ 25 pm )