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Helion (chemistry)

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A helion is a short name for the naked nucleus of helium, a doubly positively charged helium ion. In practice, helion refers specifically the nucleus of the helium-3 isotope, consisting of two protons and one neutron. The nucleus of the other stable isotope of helium, helium-4 isotope, which consists of two protons and two neutrons, is specifically called an alpha particle.

This particle is emitted in the decay of tritium, a isotope of hydrogen:

According to CODATA, the mass of a helion particle is 5.006 412 700(62) × 10−27 kg.

References

Helion (chemistry) Wikipedia


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