Input interpretation
period 3 elements | covalent radius
Summary
median | 109 pm highest | 166 pm (sodium) lowest | 102 pm (chlorine) distribution |
Units
Ranked values
| | visual | ratios | 8 | chlorine | | 0.61 | 1 7 | sulfur | | 0.63 | 1.03 6 | argon | | 0.64 | 1.04 5 | phosphorus | | 0.64 | 1.05 4 | silicon | | 0.67 | 1.09 3 | aluminum | | 0.73 | 1.19 2 | magnesium | | 0.85 | 1.38 1 | sodium | | 1 | 1.63
Plot
Plot
Periodic table location
Periodic table location
Atomic radii properties
atomic radius (empirical) | median | 110 pm | highest | 180 pm (sodium) | lowest | 100 pm (3 elements) | distribution | atomic radius (calculated) | median | 105 pm | highest | 190 pm (sodium) | lowest | 71 pm (argon) | distribution | covalent radius | median | 109 pm | highest | 166 pm (sodium) | lowest | 102 pm (chlorine) | distribution | van der Waals radius | median | 180 pm | highest | 227 pm (sodium) | lowest | 173 pm (magnesium) | distribution |
Units
Covalent radius rankings
1 | chlorine | 102 pm 2 | sulfur | 105 pm 3 | argon | 106 pm 4 | phosphorus | 107 pm 5 | silicon | 111 pm 6 | aluminum | 121 pm 7 | magnesium | 141 pm 8 | sodium | 166 pm
Unit conversions for median covalent radius 109 pm
0.109 nm (nanometers)
1.09×10^-10 meters
4.29×10^-9 inches
1.09 Å (ångströms)
Comparisons for median covalent radius 109 pm
≈ 3.5 × atomic radius of helium (the smallest atom) ( ≈ 31 pm )
≈ 4.4 × atomic radius of hydrogen ( ≈ 25 pm )