1. The problem statement, all variables and given/known data Explain why deuterium cannot undergo beta decay or produce a stable nucleus, while tritium can. 2. Relevant equations n/a 3. The attempt at a solution There was nothing in the lesson that really explained this, and the only reason I can find online is because deuterium is a stable isotope of hydrogen so it does not decay. I'm guessing that there is more to this, but I'm not sure what that would be.