Hydrogenium (H)
chemical element with symbol H and atomic number 1; lightest and most abundant substance in the universe
| Atomic Number | 1 |
|---|---|
| Atomic Weight | 1.008 |
| mass number | 1 |
| Group | 1 |
|---|---|
| Period | 1 |
| Block | s |
| proton | 1 p+ |
|---|---|
| neutron | 0 n0 |
| electron | 1 e- |
Physical Property
| Atomic Radius | 25 pm
|
|---|---|
| molar volume | 14.1 cm³/mol
|
| Covalent Radius | 32 pm
|
| Metallic Radius | |
| ionic radius | -38 pm
|
| Crystal Radius | -24 pm
|
| Van der Waals radius |
110 pm
|
| density | 0.000082 g/cm³
|
Chemical Property
| energia | |
|---|---|
| proton affinity | |
| electron affinity | 0.754195 eV/particle
|
| ionization energy | 13.598434005136 eV/particle
|
| enthalpy of vaporization | 0.904 kJ/mol
|
| enthalpy of fusion | 0.117 kJ/mol
|
| standard enthalpy of formation | 217.998 kJ/mol
|
| electron | |
| Tegimen electronicum | 1 |
 | |
| valence electron | 1 ⓘ |
 | |
| electron configuration | 1s1ⓘ |
  | |
| oxidation number | -1, 1 |
| electronegativity |
2.2
|
| Electrophilicity Index | 2.00476999140139 eV/particle
|
| fundamental state of matter | |
| phase of matter | Gas |
| gaseous state of matter | Diatomic |
| Boiling Point | 20.271 K
|
| Melting Point | 13.99 K
|
| critical pressure | 1.2858 MPa
|
| critical temperature | 32.938 K
|
| Punctum triplex | |
| appearance | |
| Color | Colorless
|
| appearance | colorless gas |
| refractive index | 1.000132
|
| thermodynamic material property | |
| Thermal Conductivity | 0.1815 W/(m K)
|
| thermal expansion | |
| molar heat capacity | 28.836 J/(mol K)
|
| Specific Heat Capacity | 14.304 J/(g⋅K)
|
| heat capacity ratio | 7/5 |
| electrical properties | |
| type | |
| electrical conductivity | |
| electrical resistivity | |
| Superconductrum | |
| magnetism | |
| type | diamagnetic |
| magnetic susceptibility (Mass) | -0.0000000248 m³/Kg
|
| magnetic susceptibility (Molar) | -0.00000000004999 m³/mol
|
| magnetic susceptibility (Volume) | -0.00000000223
|
| magnetic ordering | |
| Curie temperature | |
| Néel temperature | |
| structure | |
| Crystal Structure | Simple Hexagonal (HEX) |
| lattice constant | 3.75 Å
|
| Lattice Angles | π/2, π/2, 2 π/3 |
| mechanical property | |
| hardness | |
| bulk modulus | |
| shear modulus | |
| Young's modulus | |
| Poisson's ratio | |
| celeritas soni | 1270 m/s
|
| classificare | |
| Category | Other nonmetals, Nonmetals |
| CAS Group | IA |
| IUPAC Group | IA |
| Glawe Number | 103 |
| Mendeleev Number | 105 |
| Pettifor Number | 103 |
| Geochemical Class | volatile |
| Goldschmidt classification | atmophile |
other
Isotopes of Hydrogen
| Stable Isotopes | 2 |
|---|---|
| Unstable Isotopes | 5 |
| Natural Isotopes | 2 |
1H
| mass number | 1 |
|---|---|
| neutron number | 0 |
| relative atomic mass | |
| g-factor | 5.585694702 ± 0.000000018
|
| natural abundance | 99.9855 ± 0.0078
|
| radioactivitas | stable isotope |
| half-life | Not Radioactive ☢️ |
| Volubilitas | 1/2 |
| nuclear quadrupole moment | 0
|
| repertus | 1920 |
| parity | + |
2D
| mass number | 2 |
|---|---|
| neutron number | 1 |
| relative atomic mass | |
| g-factor | 0.857438231 ± 0.000000005
|
| natural abundance | 0.0145 ± 0.0078
|
| radioactivitas | stable isotope |
| half-life | Not Radioactive ☢️ |
| Volubilitas | 1 |
| nuclear quadrupole moment | |
| repertus | 1932 |
| parity | + |
3T
| mass number | 3 |
|---|---|
| neutron number | 2 |
| relative atomic mass | |
| g-factor | 5.95792492 ± 0.000000028
|
| natural abundance | |
| radioactivitas | ☢️ radioactive element |
| half-life | 12.32 ± 0.02 y
|
| Volubilitas | 1/2 |
| nuclear quadrupole moment | 0
|
| repertus | 1934 |
| parity | + |
| decay mode | intensity |
|---|---|
| β− (β− decay) | 100% |
4H
| mass number | 4 |
|---|---|
| neutron number | 3 |
| relative atomic mass | |
| g-factor | |
| natural abundance | |
| radioactivitas | ☢️ radioactive element |
| half-life | 139 ± 10 ys
|
| Volubilitas | 2 |
| nuclear quadrupole moment | |
| repertus | 1981 |
| parity | - |
| decay mode | intensity |
|---|---|
| n (neutron emission) | 100% |
5H
| mass number | 5 |
|---|---|
| neutron number | 4 |
| relative atomic mass | |
| g-factor | |
| natural abundance | |
| radioactivitas | ☢️ radioactive element |
| half-life | 86 ± 6 ys
|
| Volubilitas | 1/2 |
| nuclear quadrupole moment | 0
|
| repertus | 1987 |
| parity | + |
| decay mode | intensity |
|---|---|
| 2n (2-neutron emission) | 100% |
6H
| mass number | 6 |
|---|---|
| neutron number | 5 |
| relative atomic mass | |
| g-factor | |
| natural abundance | |
| radioactivitas | ☢️ radioactive element |
| half-life | 294 ± 67 ys
|
| Volubilitas | 2 |
| nuclear quadrupole moment | |
| repertus | 1984 |
| parity | - |
| decay mode | intensity |
|---|---|
| n (neutron emission) | |
| 3n (3-neutron emission) |
7H
| mass number | 7 |
|---|---|
| neutron number | 6 |
| relative atomic mass | |
| g-factor | |
| natural abundance | |
| radioactivitas | ☢️ radioactive element |
| half-life | 652 ± 558 ys
|
| Volubilitas | 1/2 |
| nuclear quadrupole moment | 0
|
| repertus | 2003 |
| parity | + |
| decay mode | intensity |
|---|---|
| 2n (2-neutron emission) |
historia
| inventor | Henry Cavendish |
|---|---|
| location of discovery | England |
| repertus | 1766 |
| Etymologia | Greek: hydro (water) and genes (generate) |
| pronunciation | HI-dreh-jen (English) |
source
Nuclear Screening Constants
| 1 | s | 0 |
