It's one of the isotopes that can be found in the Earth's crust.
Source: tatoeba (8160225)
Isotopes
Synonyms for "isotopes" (6 found)
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More general
2 entriesMore specific
4 entriesCollocations
6 entriesisotope separationisotopes of elementsisotopic abundanceisotopic labelingradioisotopesstable isotopes
Derivations
3 entriesSample sentences
3 total sentences available.
Isotopes are atoms that have the same number of protons, but different numbers of neutrons and thus different atomic weight values.
Source: tatoeba (8767540)
Scientists from the Lawrence Livermore National Laboratory report they were able to create a type of fusion reaction by bombarding a microscopic pellet of fuel with beams from 192 powerful lasers to compress its component parts — hydrogen isotopes known as deuterium and tritium — and fuse them together at the atomic level.
Source: tatoeba (10921443)