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88Sr

88Sr is a stable isotope of the element strontium, with mass number 88, atomic number 38, and 50 neutrons. It is the most abundant strontium isotope in natural samples, comprising about 82.6% of natural strontium. The atomic mass of 88Sr is about 87.9056 atomic mass units. Like other stable isotopes, 88Sr does not decay radioactively under normal conditions.

In nuclear terms, 88Sr has a closed neutron shell at N = 50, which contributes to its relative

88Sr occurs widely in the Earth's crust as part of common strontium minerals, including celestite (SrSO4) and

Analytical applications typically emphasize the ratios among strontium isotopes, especially 87Sr/86Sr, for provenance and dating studies.

Overall, 88Sr’s predominance in natural strontium and its stable nature make it a fundamental component in

stability
compared
with
some
neighboring
isotopes.
Its
abundance
and
stability
make
it
a
major
component
of
natural
strontium
encountered
in
minerals
and
rocks.
strontianite
(SrCO3).
Its
presence,
together
with
other
stable
isotopes
such
as
84Sr,
86Sr,
and
87Sr,
is
exploited
in
geochemical
and
geochronological
studies
that
trace
sourcing,
weathering,
and
planetary
differentiation.
While
88Sr
is
not
the
ratio
of
primary
interest
in
geochronology,
it
appears
in
mass
spectrometric
measurements
as
part
of
the
isotopic
suite
and
can
aid
in
calibration,
correction
for
mass
bias,
and
quality
control
in
isotope
ratio
analyses.
studies
of
geological
and
environmental
processes,
as
well
as
in
instrument
calibration
for
isotope
measurements.