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Meaning of ATOMIC NUMBER 85
WordNet Dictionary
Definition:
[n]
a
highly
unstable
radioactive
element
(
the
heaviest
of
the
halogen
series
);
a
decay
product
of
uranium
and
thorium
Websites:
Synonyms:
astatine
,
At
See Also:
chemical element
,
element
,
halogen
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