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rubidium
XDict
n
. 铷
PyDict
铷
WordNet
(
r
)
3
.
0
(
2006
) (
WordNet
)
rubidium
n
1
:
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
[
synonym
: {
rubidium
},
{
Rb
}, {
atomic
number
37
}]
The
Collaborative
International
Dictionary
of
English
v
.
0
.
48
(
gcide
)
Rubidium
\
Ru
*
bid
"
i
*
um
\,
n
. [
NL
.,
fr
.
L
.
rubidus
red
,
fr
.
rubere
to
be
red
.
So
called
from
two
dark
red
spectroscopic
lines
by
means
of
which
it
was
discovered
in
the
lepidolite
from
Rozena
,
Moravia
.
See
{
Rubicund
}.] (
Chem
.)
A
rare
metallic
element
of
the
alkali
metal
series
,
atomic
number
37
.
It
occurs
quite
widely
,
but
in
small
quantities
,
and
always
combined
.
It
is
isolated
as
a
soft
yellowish
white
metal
,
analogous
to
potassium
in
most
of
its
properties
.
Symbol
Rb
.
Atomic
weight
,
85
.
48
.
[
1913
Webster
]
The
Elements
Database
(
element
)
rubidium
Symbol
:
Rb
Atomic
number
:
37
Atomic
weight
:
85
.
47
Soft
silvery
metallic
element
,
belongs
to
group
1
of
the
periodic
table
.
Rb
-
97
,
the
naturally
occurring
isotope
,
is
radioactive
.
It
is
highly
reactive
,
with
properties
similar
to
other
elements
in
group
1
,
like
igniting
spontaneously
in
air
.
Discovered
spectroscopically
in
1861
by
W
.
Bunsen
and
G
.
R
.
Kirchoff
.
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