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Meaning of ATOMIC NUMBER 5
WordNet Dictionary
Definition:
[n]
a
trivalent
metalloid
element
;
occurs
both
in
a
hard
black
crystal
and
in
the
form
of
a
yellow
or
brown
powder
Websites:
Synonyms:
B
,
boron
See Also:
borax
,
chemical element
,
element
,
kernite
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