# Are there isotopes that ONLY decay through beta decay?

Are there isotopes that only go through beta decay and nothing else to become stable ?

-
${}^0\mathrm{n}$? ${}^3\mathrm{H}$? ${}^6\mathrm{He}$? Just poke around the table of the isotopes a little, already! –  dmckee Sep 14 '13 at 3:04