Rb
English Dictionary
->
Letter R
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Rb Definition
(n)
a
soft
silvery
metallic
element
of
the
alkali
metal
group
;
burns
in
air
and
reacts
violently
in
water
;
occurs
in
carnallite
and
lepidolite
and
pollucite
Rb Synonyms
atomic number 37
Rb
rubidium
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