Assertion: helium atom | /r/HasAspect | two protons
Facets:
value: in its nucleus
type: LOCATION
Source sentences:
text: Sketch a diagram of a helium atom, which has two protons and two neutrons in its nucleus.
text: Sketch a diagram of a helium atom, which has two protons and two neutrons in its nucleus.
text: However, some helium atoms have only one neutron.
text: It's easy to get a hydrogen atom with one proton and one neutron (deuterium), yet you won't find a helium atom with an atomic weight of 2 because this would mean the helium atom had two protons and zero neutrons!