Input interpretation
metalloids | covalent radius
Summary
median | 120 pm highest | 140 pm (polonium) lowest | 84 pm (boron) distribution | | (based on 7 values; 1 unavailable)
Entity with missing value
tennessine
Ranked values
| | visual | ratios | 7 | boron | | 0.6 | 1 6 | silicon | | 0.79 | 1.3 5 | arsenic | | 0.85 | 1.4 4 | germanium | | 0.86 | 1.4 3 | tellurium | | 0.99 | 1.6 2 | antimony | | 0.99 | 1.7 1 | polonium | | 1 | 1.7
Plot
Plot
Periodic table location
Periodic table location
Atomic radii properties
atomic radius (empirical) | median | 125 pm | highest | 190 pm (polonium) | lowest | 85 pm (boron) | distribution | atomic radius (calculated) | median | 123 pm | highest | 135 pm (polonium) | lowest | 87 pm (boron) | distribution | covalent radius | median | 120 pm | highest | 140 pm (polonium) | lowest | 84 pm (boron) | distribution | van der Waals radius | median | 206 pm | highest | 210 pm (silicon) | lowest | 185 pm (arsenic) | distribution |
Units
Covalent radius rankings
1 | boron | 84 pm 2 | silicon | 111 pm 3 | arsenic | 119 pm 4 | germanium | 120 pm 5 | tellurium | 138 pm 6 | antimony | 139 pm 7 | polonium | 140 pm (based on 7 values; 1 unavailable)
Unit conversions for median covalent radius 120 pm
0.12 nm (nanometers)
1.2×10^-10 meters
4.72×10^-9 inches
1.2 Å (ångströms)
Comparisons for median covalent radius 120 pm
≈ 3.9 × atomic radius of helium (the smallest atom) ( ≈ 31 pm )
≈ 4.8 × atomic radius of hydrogen ( ≈ 25 pm )