Molecule
- Name
- Hydrogen
- IUPAC name
- Dihydrogen
- Secondary names
- Dihydrogen, molecular hydrogen, H2
- InChI
- InChI=1S/H2/h1H
- InChI key
- UFHFLCQGNIYNRP-UHFFFAOYSA-N
- CAS number
- 1333-74-0
- Comments
- natural H2
- Formula
- H2
- Chemical formula
- H2
- Structural formula
- [H][H]
- Charge
- 0
- Unpaired electrons
- 0

- Relations
-
- no
- Spin type
- equilibrated
- Spin quantum numbers
- 0, 1
- Molar mass
- 2.01588 g/mol
- State STP
- gas
- Protic
- protic
- Polarity
- nonpolar
- Dipole
- 0.0 D
- Molecule symmetry
- Dinfh
- Case
- diatomic
- Vibrations number
- 1
- Vibrations
-
Label Mode Bond Symmetry Degeneracy Fundamental frequency Observed frequency Observed frequency Harmonic frequency Activity IR Activity Raman Strength Comments V1 stretching H−H A1 no 4161.0 4401.21 inactive active ia intensity is vvw - Comments
- Vibrations of the main isotope: 1H2. Data from VPL database and NIST Chemistry WebBook