Input interpretation
period 3 elements | atomic diameter
Summary
median | 210 pm highest | 360 pm (sodium) lowest | 140 pm (argon) distribution |
Units
Ranked values
| | visual | ratios | 8 | argon | | 0.39 | 1 7 | phosphorus | | 0.56 | 1.4 6 | sulfur | | 0.56 | 1.4 5 | chlorine | | 0.56 | 1.4 4 | silicon | | 0.61 | 1.5 3 | aluminum | | 0.69 | 1.8 2 | magnesium | | 0.83 | 2.1 1 | sodium | | 1 | 2.5
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
Atomic diameter rankings
1 | argon | 140 pm 2 | chlorine | 200 pm 3 | sulfur | 200 pm 4 | phosphorus | 200 pm 5 | silicon | 220 pm 6 | aluminum | 250 pm 7 | magnesium | 300 pm 8 | sodium | 360 pm
Unit conversions for median atomic diameter 210 pm
0.21 nm (nanometers)
2.1×10^-10 meters
8.27×10^-9 inches
2.1 Å (ångströms)
Comparisons for median atomic diameter 210 pm
≈ ( 0.2 ≈ 1/5 ) × carbon nanotube diameter ( ≈ 1 nm )
≈ 0.62 × diameter of a carbon atom ( ≈ 340 pm )
≈ (0.00209 to 2.8) × diameter of a molecule ( 0.74 to 1000 Å )