If one neutron is added to a helium nucleus, the result is ;?

Question

If one neutron is added to a helium nucleus, the result is ;?

Answer 1

A helium atom with one more neutron than it had originally? It's the protons that affect the properties of the atom, for the most part.

Answer 2

It would be Helium-4 (2p, 2n).

[edit] I yield to Steve on the He-5, as He-4 is the more common (default) isotope.

Radzewicz, you are thinking of Hydrogen; and it's tritium, not triterium.

Answer 3

Its an alpha particle, an unstable radioactive particle. If you ingest it, it is detrimental to your health. They can be fully ionized to make 4-Helium which is actually pretty stable.

Answer 4

helium-5 with a half-life of 7.6×10−22 seconds