atomic number 20
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atomic number 20 Definition
(n)
a
white
metallic
element
that
burns
with
a
brilliant
light
;
the
fifth
most
abundant
element
in
the
earth
''
s
crust
;
an
important
component
of
most
plants
and
animals
atomic number 20 Synonyms
atomic number 20
Ca
calcium
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