natural isotope

One approach would use silicon with all three of its natural isotopes present.

The less common natural isotope of indium, indium-113, is stable.

All other natural isotopes are known to be stable, which makes Fe seemingly strange.

The concentration and location of some natural isotopes, particularly uranium-238 (U), can be affected by human activity.

It has 8 natural isotopes.

Moreover, the weighted average mass can be near-integer, but at the same time not corresponding to the mass of any natural isotope.

The atomic mass of different isotopes affect their chemical kinetic behavior, leading to natural isotope separation processes.

Atomic mass for natural life is based on weighted average abundance of natural isotopes that occur in the Earth's crust and atmosphere.

The other natural isotope, Os, has an extremely long half-life (2x10 years) and for practical purposes can be considered to be stable as well.

For synthetic elements, the isotope depends on the means of synthesis, so the concept of natural isotope abundance has no meaning.

The most common method of producing tritium is by bombarding a natural isotope of lithium, lithium-6, with neutrons in a nuclear reactor.

Distribution of natural isotopes of carbon in Linsley Pond and other New England lakes.

The worldwide average background dose for a human being is about 3.5 mSv per year [1], mostly from cosmic radiation and natural isotopes in the earth.

Some artificial radioisotopes such as iodine-131 are chemically identical to natural isotopes needed by the body, and may be more readily absorbed if the individual has a deficit.

Existence of a natural isotope effect not dependent on mass complicates efforts to deduce the history of the Solar System by studying isotope ratios.

Both of the natural isotopes have an unexpectedly low nuclear binding energy per nucleon when compared with the adjacent lighter and heavier elements, helium and beryllium.

Because a mole of molecules may contain a variety of molecular masses due to natural isotopes, the average mass is usually not identical to the mass of any single molecule.

Three isotopes, Ac, Ac and Ac, were found in nature and the others were produced in the laboratory; only the three natural isotopes are used in applications.

Its most stable isotope is Fr with a half-life of 22 minutes, occurring in trace quantities as an intermediate decay product of U. The other natural isotope is Fr.

However, different astronomical bodies are found to have different ratios of deuterium to hydrogen-1, and this is thought to be as a result of natural isotope separation processes that occur from solar heating of ices in comets.

He was a creative pioneer in several areas, including quantitative palynology, cycling of natural isotopes, biogeochemistry, population dynamics, systematics and ecology of freshwater zooplankton, and he promoted the use of life tables in ecology.

Both natural isotopes have anomalously low nuclear binding energy per nucleon compared to the next lighter and heavier elements, helium and beryllium, which means that alone among stable light elements, lithium can produce net energy through nuclear fission.

In the case of many elements that have one natural isotope or one dominant isotope, the actual numerical similarity/difference between the atomic mass of the most common isotope and the relative atomic mass or standard atomic weights can be small or even nil, and does affect most bulk calculations.