Helium
in example sentence
Hydrogen has one proton,
helium
, two protons, lithium, three protons, and so on.
More example sentences with word helium
And now simple atoms appear of hydrogen and
helium.
It consisted of huge clouds of hydrogen and
helium
atoms, and they have no structure.
So where you get slightly denser areas, gravity starts compacting clouds of hydrogen and
helium
atoms.
For instance, here they are laying down the balloon fabric behind, which is eventually going to be filled up with
helium.
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