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atomic diameter of group 1 elements

Input interpretation

alkali metals | atomic diameter
alkali metals | atomic diameter

Summary

median | 440 pm highest | 520 pm (cesium) lowest | 290 pm (lithium) distribution | | (based on 5 values; 1 unavailable)
median | 440 pm highest | 520 pm (cesium) lowest | 290 pm (lithium) distribution | | (based on 5 values; 1 unavailable)

Entity with missing value

francium
francium

Ranked values

 | | visual | ratios |  5 | lithium | | 0.56 | 1 4 | sodium | | 0.69 | 1.24 3 | potassium | | 0.85 | 1.52 2 | rubidium | | 0.9 | 1.62 1 | cesium | | 1 | 1.79
| | visual | ratios | 5 | lithium | | 0.56 | 1 4 | sodium | | 0.69 | 1.24 3 | potassium | | 0.85 | 1.52 2 | rubidium | | 0.9 | 1.62 1 | cesium | | 1 | 1.79

Plot

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Plot

Periodic table location

Periodic table location
Periodic table location

Atomic radii properties

atomic radius (empirical) | median | 220 pm  | highest | 260 pm (cesium)  | lowest | 145 pm (lithium)  | distribution |  atomic radius (calculated) | median | 243 pm  | highest | 298 pm (cesium)  | lowest | 167 pm (lithium)  | distribution |  covalent radius | median | 212 pm  | highest | 260 pm (francium)  | lowest | 128 pm (lithium)  | distribution |  van der Waals radius | median | 227 pm  | highest | 275 pm (potassium)  | lowest | 182 pm (lithium)  | distribution |
atomic radius (empirical) | median | 220 pm | highest | 260 pm (cesium) | lowest | 145 pm (lithium) | distribution | atomic radius (calculated) | median | 243 pm | highest | 298 pm (cesium) | lowest | 167 pm (lithium) | distribution | covalent radius | median | 212 pm | highest | 260 pm (francium) | lowest | 128 pm (lithium) | distribution | van der Waals radius | median | 227 pm | highest | 275 pm (potassium) | lowest | 182 pm (lithium) | distribution |

Units

Atomic diameter rankings

1 | lithium | 290 pm 2 | sodium | 360 pm 3 | potassium | 440 pm 4 | rubidium | 470 pm 5 | cesium | 520 pm (based on 5 values; 1 unavailable)
1 | lithium | 290 pm 2 | sodium | 360 pm 3 | potassium | 440 pm 4 | rubidium | 470 pm 5 | cesium | 520 pm (based on 5 values; 1 unavailable)

Unit conversions for median atomic diameter 440 pm

0.44 nm (nanometers)
0.44 nm (nanometers)
4.4×10^-10 meters
4.4×10^-10 meters
1.73×10^-8 inches
1.73×10^-8 inches
4.4 Å (ångströms)
4.4 Å (ångströms)

Comparisons for median atomic diameter 440 pm

 ≈ ( 0.2 ≈ 1/5 ) × DNA helix diameter ( ≈ 2 nm )
≈ ( 0.2 ≈ 1/5 ) × DNA helix diameter ( ≈ 2 nm )
 ≈ 0.4 × carbon nanotube diameter ( ≈ 1 nm )
≈ 0.4 × carbon nanotube diameter ( ≈ 1 nm )
 ≈ 1.3 × diameter of a carbon atom ( ≈ 340 pm )
≈ 1.3 × diameter of a carbon atom ( ≈ 340 pm )