元となった辞書の項目
platinum group
noun
In
chemistry,
a
group
of
elements
with
related
properties
similar
to
that
of
platinum,
notably
high
resistance
to
chemical
activity,
particularly
oxidation
and
reaction
with
acids.
The
platinum
group
consists
of
the
elements
ruthenium,
rhodium,
palladium,
osmium,
iridium,
and
platinum.
In
the
periodic
table
of
the
elements
they
are
in
period
5
or
6
and
in
groups
8,
9
or
10.
意味(1)
In
chemistry,
a
group
of
elements
with
related
properties
similar
to
that
of
platinum,
notably
high
resistance
to
chemical
activity,
particularly
oxidation
and
reaction
with
acids.
The
platinum
group
consists
of
the
elements
ruthenium,
rhodium,
palladium,
osmium,
iridium,
and
platinum.
In
the
periodic
table
of
the
elements
they
are
in
period
5
or
6
and
in
groups
8,
9
or
10.