Assertion: neptunium's proton | /r/HasProperty | the nucleus of neptunium-237
Facets:
Source sentences:
text: The mass of each proton and neutron in the nucleus of Neptunium-237 has less than the mass of each proton and neutron is the nucleus of Americium-241, because each proton and neutron is the nucleus of Neptunium-237 has less energy than each proton and neutron is the nucleus of Americium-241!!