#isotopes_of_lithium
Isotopes of lithium
Nuclides with atomic number of 3 but with different mass numbers
Naturally occurring lithium (3Li) is composed of two stable isotopes, lithium-6 (6Li) and lithium-7 (7Li), with the latter being far more abundant on Earth. 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. The longest-lived radioisotope of lithium is 8Li, which has a half-life of just 838.7(3) milliseconds. 9Li has a half-life of 178.2(4) ms, and 11Li has a half-life of 8.75(6) ms. All of the remaining isotopes of lithium have half-lives that are shorter than 10 nanoseconds. The shortest-lived known isotope of lithium is 4Li, which decays by proton emission with a half-life of about 91(9) yoctoseconds, although the half-life of 3Li is yet to be determined, and is likely to be much shorter, like 2He which undergoes proton emission within 10−9 s.
Tue 16th
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