Assertion: hydrogen atom's nucleus | /r/HasAspect | z protons
Facets:
value: for helium
type: TRANSITIVE-OBJECT
Source sentences:
text: So, if a nucleus has Z protons (Z = 1 for hydrogen, 2 for helium, etc.) and only one electron, that atom is called a hydrogen-like atom.
text: This means the nucleus is either too big to hold itself together or has too many protons or neutrons.