Assertion: atom | /r/HasProperty | hydrogen
Facets:
value: mostly
type: DEGREE
value: according to jefferson lab
type: OTHER
Source sentences:
text: You'd start with the simplest atom of all, hydrogen (symbol H), which has one proton and one electron, but no neutrons.
text: An atomic number of 1 means the atom is hydrogen, atomic number 2 means helium, 3 means lithium, 4 is beryllium, and so on.
text: Every atom is a chemical element, like hydrogen, iron or chlorine.
text: The earliest atoms were primarily hydrogen and helium , which are still the most abundant elements in the universe, according to Jefferson Lab .
text: A star fuses lighter atoms, mostly hydrogen and helium, into heavier atoms over its lifetime.