English
What does «protactinio» mean in Spanish?
Radioactive
metal
,
atomic
number
91. Chemical symbol: Pa. It
belongs
to
the
group
of actinides. It
has
an
intense
metallic
luster. Due to
its
scarcity
,
high
radioactivity
and
toxicity,
there
are
currently
no
uses
for
this
chemical
element
.
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