Input interpretation
![period 1 elements | nuclear diameter](../image_source/b5aba3ed74bcbe28272699c718266e78.png)
period 1 elements | nuclear diameter
Results
![hydrogen | 2.4 fm (femtometers) helium | 3.024 fm (femtometers)](../image_source/80413b40222cc8c5bb2666a48f081f83.png)
hydrogen | 2.4 fm (femtometers) helium | 3.024 fm (femtometers)
![period 1 elements | nuclear diameter | 2.712 fm (femtometers) (median)](../image_source/7460ac310278ff338bcbc9bc53e00123.png)
period 1 elements | nuclear diameter | 2.712 fm (femtometers) (median)
Relative values
![| visual | ratios | | comparisons hydrogen | | 0.7937 | 1 | 20.63% smaller helium | | 1 | 1.26 | 25.99% larger](../image_source/97e91b10a3a623e67552e75ae18c055d.png)
| visual | ratios | | comparisons hydrogen | | 0.7937 | 1 | 20.63% smaller helium | | 1 | 1.26 | 25.99% larger
Unit conversions for median nuclear diameter 2.712 fm
![2.712×10^-15 meters](../image_source/5e547e0ec444fba995332ec463772f05.png)
2.712×10^-15 meters
![1.068×10^-13 inches](../image_source/f740d1e72cc90618e7c9e7f2f339cb3c.png)
1.068×10^-13 inches