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RATH3SUNG0D2017 t1_iyjcj4f wrote

Reply to comment by cjheaford in Do we have any compounds or materials on Earth that compared to the rest of the universe is incredibly rare? by SwordArtOnlineIsGood

Beta decay! A neutron emits an electron and antineutrino and becomes a proton.

Edit: If you'll entertain wikipedia as a source, https://en.m.wikipedia.org/wiki/Beta_decay

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Nieshtze t1_iys24p7 wrote

That doesn't answer his question. Beta decay does not increase mass of the parent nucleus, only increases the atomic number.

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