Assertion: deuterium's neutron | /r/HasProperty | unstable
Facets:
Source sentences:
text: However, free neutrons are unstable with a mean life of 880 sec; some neutrons decayed in the next few minutes before fusing into any nucleus, so the ratio of total neutrons to protons after nucleosynthesis ends is about 1/7.
text: It's stability is remarkable since the free neutron is unstable, undergoing beta decay with a halflife of 10.3 minutes.