Molecule
Name
Hydrogen
IUPAC name
(1H2)Dihydrogen
Secondary names
Dihydrogen, diprotium, molecular hydrogen, H2
InChI
InChI=1S/H2/h1H/i1+0H
InChI key
UFHFLCQGNIYNRP-HXFQMGJMSA-N
Comments
1H2 isotope
Formula
1H2
Chemical formula
H2
Isotopic formula
[1]H2
Structural formula
[1H][1H]
Charge
0
Unpaired electrons
0
  Atom Name Number
1H Hydrogen 2
Relations
  • no
Isotope mixture type
pure isotope
Spin type
equilibrated
Spin quantum numbers
0, 1
Equilibrium meta/para ratio
3 (3/1)
Molar mass
2.01565 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 1H1H A1 no 4161.0 4401.21 inactive active ia intensity is vvw
Comments
Data from VPL database and NIST Chemistry WebBook
Chemical bonds
  Bond Number
1H1H 1