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הורד מילון זה
having the same number of
(i.e. the same
). There are 118 elements that have been identified, of which the first 94 occur naturally on Earth with the remaining 24 being
. There are 80 elements that have at least one stable
and 38 that have exclusively
isotopes, which decay over time into other elements.
element (by mass) making up the Earth, while
is the most common element in the
of the earth.
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