| Property | Value |
|---|---|
| Atomic number | 1 |
| Atomic weight | 1.007947 amu |
| Element family | Non-metals |
| Electronic configuration | 1s1 |
| Stable and very long lived isotopes | 1H: 99.985%, 2H: 0.015% |
| Next element | Helium |
| Density | 8.988E-5 g/cm3 (STP) |
| Melting | -258.975 °C |
| Boiling | -252.9 °C |
| Covalent radius | 0.32 Å |
| Van der Waals radius | 1.2 Å |
| Ionic radius | 0.012 Å |
| First ionization potential | 13.598 eV |
| Electron affinity | 0.754 eV |
| Electronegativity | 2.2 |
| Discovery year | 1766 |
Hydrogen is an element number 1 from non-metals family. Its symbol is H. Hydrogen atomic weight is 1.007947 amu. H stable and long lived isotopes are 1H: 99.985%, 2H: 0.015%. Hydrogen electronic configuration is 1s1. Sample compounds that contain Hydrogen are H2O, NaOH, H2SO4, HCl, NH3, CH4, H2.
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