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calcium-40
English
Meaning
calcium-40
meaning
What does
calcium-40
mean?
calcium-40
noun
—
(
isotope
)
The
major
stable
isotope
of
calcium
, 4020
Ca
,
having
twenty
protons
and
twenty
neutrons
;
it
amounts
to
almost
97
%
of
the
element
in
nature
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