Assertion: hydrogen's neutron | /r/HasProperty | 2 neutrons
Facets:
Source sentences:
text: The Isotopes of Hydrogen Atomic Atomic Percent of Name Nucleus Number Mass Hydrogen Atoms Protium 1 proton 1 1 99.985 Deuterium 1 proton; 1 neutron 1 2 0.015 Tritium 1 proton; 2 neutrons 3 trace