Assertion: hydrogen atom's nucleus | /r/HasAspect | neutron
Facets:
value: except for hydrogen
type: OTHER
Source sentences:
text: Except for hydrogen, the nucleus also has neutrons.
text: The fact that nuclei can have anywhere from 1 to nearly 300 protons and neutrons accounts for their wide variation in mass.
text: This means the nucleus is either too big to hold itself together or has too many protons or neutrons.