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Hs

Hs, with the chemical symbol Hs and atomic number 108, is a synthetic transactinide element. It lies in period 7 of the periodic table and is part of the d-block, in group 8. Hassium has no stable isotopes and has only been observed in extremely small quantities produced in laboratory experiments; its isotopes decay rapidly, limiting opportunities for detailed study.

Discovery and naming

Hassium was first synthesized in 1984 by researchers at the GSI Helmholtz Centre for Heavy Ion Research

Production and properties

As a very short-lived, artificially produced element, hassium atoms are created only in extremely small numbers—typically

Applications and research

Hassium has no practical applications due to its transient existence. It is of interest primarily to nuclear

in
Darmstadt,
Germany,
by
bombarding
a
lead-208
target
with
chromium-54
ions
in
a
fusion-evaporation
reaction.
The
element
was
named
hassium
in
honor
of
the
German
state
of
Hesse
(Hessen).
The
name
hassium
and
the
symbol
Hs
were
officially
sanctioned
by
IUPAC,
reflecting
its
position
as
a
heavier
homologue
in
group
8.
a
few
atoms
at
a
time—and
decay
within
milliseconds
to
seconds.
Because
of
this,
only
limited
experimental
data
exist
on
its
physical
and
chemical
properties.
Theoretical
and
comparative
studies
suggest
that
hassium
should
share
some
chemical
characteristics
with
its
lighter
group-8
neighbors,
such
as
ruthenium
and
osmium,
but
reliable
measurements
are
lacking.
Consequently,
its
chemistry
is
largely
inferred
from
trends
in
the
periodic
table
rather
than
observed
directly.
and
theoretical
chemists
and
physicists
studying
the
properties
of
superheavy
elements,
the
behavior
of
nuclei
at
extreme
proton
and
neutron
numbers,
and
the
boundaries
of
the
periodic
table.