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Helium
/hˈiːliəm/
/ˈhiɫiəm/
[noun]
Helium
[NOUN]
1
a chemical element that is a colorless noble gas which is lighter than air
synonyms :
atomic number 2
He
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Examples
1.
Well
,
helium
now
has
two
protons
in
the
nucleus
.
2.
Helium
is
.
3.
Here
is
helium
.
4.
So
helium
has
2
protons
.
more
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