What is He3 in chemistry

Helium-3

See also: Overview of the helium isotopes.

 

General data

Starting nuclides

Direct mother nuclides are: 3H, 4Li.

 

Natural occurrence

Comparison of the natural helium isotopes including isotope frequency (proportion of the isotope mixture):

 

Atomic mass Arproportion ofHalf-lifeSpin
helium
Isotope mixture
4.002602 u100 %
isotope 3Hey3.01602932 (2) and0,0002(2) %stable1/2+
isotope 4Hey4.0026032541 (4) and99,9998(2)stable0+

 

NMR data

3He is one of the NMR-active nuclides.

 

Isotonic and isobaric nuclei

The following table shows isotonic (same number of neutrons N = 1) and isobaric (same number of nucleons A = 3) atomic nuclei for the nuclide helium-3. Naturally occurring isotopes are marked in green; light green = radionuclides.

 

OZIsotons N = 1Isobar A = 3
12H3H
23Hey3Hey
34Li
45Be
56B.

 

External data and identifiers

 


last changes at 04.07.2020.

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