Input interpretation
![period 1 elements | atomic mass](../image_source/4023d52aa2bbc5ea8e8d3147ca180513.png)
period 1 elements | atomic mass
Results
![hydrogen | 1.008 u (unified atomic mass units) helium | 4.002602 u (unified atomic mass units)](../image_source/5c36d20124056b24e84e3e5650dcfb69.png)
hydrogen | 1.008 u (unified atomic mass units) helium | 4.002602 u (unified atomic mass units)
![period 1 elements | atomic mass | 2.5053 u (unified atomic mass units) (median)](../image_source/849d9e5113e58eabc101e48e195dbd69.png)
period 1 elements | atomic mass | 2.5053 u (unified atomic mass units) (median)
Relative values
![| visual | ratios | | comparisons hydrogen | | 0.2518 | 1 | 74.82% smaller helium | | 1 | 3.971 | 297.1% larger](../image_source/59eec221c6afde22013fc7af27f24be8.png)
| visual | ratios | | comparisons hydrogen | | 0.2518 | 1 | 74.82% smaller helium | | 1 | 3.971 | 297.1% larger
Unit conversions for median atomic mass 2.5053 u
![2.5053 Da (daltons)](../image_source/a8fe9b8b90fb2287522caf58c1222beb.png)
2.5053 Da (daltons)
![4.1602×10^-24 grams](../image_source/67ad60cd36debb4af130552d7cf6a70c.png)
4.1602×10^-24 grams
![4.1602×10^-27 kg (kilograms)](../image_source/b9ac4429b4a715e7786891194520c759.png)
4.1602×10^-27 kg (kilograms)
![2.5054 chemical atomic mass units (unit officially deprecated)](../image_source/0789a769888cc4db12821e2ad676fcde.png)
2.5054 chemical atomic mass units (unit officially deprecated)
![2.5061 physical atomic mass units (unit officially deprecated)](../image_source/87bfc4d83ef5fbf1dfb1df9ab05fa810.png)
2.5061 physical atomic mass units (unit officially deprecated)
Corresponding quantities
![Relative atomic mass A_r from A_r = m_aN_A/M_u: | 2.5](../image_source/7438404ca7c944c90253b89f424a982f.png)
Relative atomic mass A_r from A_r = m_aN_A/M_u: | 2.5
![Molar mass M from M = m_aN_A: | 2.5 g/mol (grams per mole)](../image_source/bc330159e94bbc6c763b8ef30c249512.png)
Molar mass M from M = m_aN_A: | 2.5 g/mol (grams per mole)