Zinc: Difference between revisions

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===Isotopes===

Five stable [[isotope]]s of zinc occur in nature, with 64Zn being the most abundant isotope (49.17% [[natural abundance]]). The other isotopes found in nature are {{chem|66|Zn}} (27.73%), {{chem|67|Zn}} (4.04%), {{chem|68|Zn}} (18.45%), and {{chem|70|Zn}} (0.61%).~~{{NUBASE2016|name}}~~

Five stable [[isotope]]s of zinc occur in nature, with 64Zn being the most abundant isotope (49.17% [[natural abundance]]). The other isotopes found in nature are {{chem|66|Zn}} (27.73%), {{chem|67|Zn}} (4.04%), {{chem|68|Zn}} (18.45%), and {{chem|70|Zn}} (0.61%).

Several dozen [[radioisotope]]s have been characterized. {{chem|65|Zn}}, which has a half-life of 243.66 days, is the least active radioisotope, followed by {{chem|72|Zn}} with a half-life of 46.5 hours. Zinc has 10 [[nuclear isomer]]s, of which 69mZn has the longest half-life, 13.76 h. The superscript ''m'' indicates a [[metastable]] isotope. The nucleus of a metastable isotope is in an [[excited state]] and will return to the [[ground state]] by emitting a [[photon]] in the form of a [[gamma ray]]. {{chem|61|Zn}} has three excited metastable states and {{chem|73|Zn}} has two. The isotopes {{chem|65|Zn}}, {{chem|71|Zn}}, {{chem|77|Zn}} and {{chem|78|Zn}} each have only one excited metastable state.

The most common [[decay mode]] of a [[radioisotope]] of zinc with a [[mass number]] lower than 66 is [[positron emission]] (β+), resulting an isotope of copper.~~{{NUBASE2020|ref}}~~

The most common [[decay mode]] of a [[radioisotope]] of zinc with a [[mass number]] lower than 66 is [[positron emission]] (β+), resulting an isotope of copper.

:{{nuclide|zinc|n}} → {{nuclide|copper|n}} + {{SubatomicParticle|link=yes|positron}} + {{SubatomicParticle|link=yes|Electron neutrino}}

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 ===Isotopes===
 {{Main|Isotopes of zinc}}
-Five stable [[isotope]]s of zinc occur in nature, with <sup>64</sup>Zn being the most abundant isotope (49.17% [[natural abundance]]). The other isotopes found in nature are {{chem|66|Zn}} (27.73%), {{chem|67|Zn}} (4.04%), {{chem|68|Zn}} (18.45%), and {{chem|70|Zn}} (0.61%).{{NUBASE2016|name}}
+Five stable [[isotope]]s of zinc occur in nature, with <sup>64</sup>Zn being the most abundant isotope (49.17% [[natural abundance]]). The other isotopes found in nature are {{chem|66|Zn}} (27.73%), {{chem|67|Zn}} (4.04%), {{chem|68|Zn}} (18.45%), and {{chem|70|Zn}} (0.61%).
 Several dozen [[radioisotope]]s have been characterized. {{chem|65|Zn}}, which has a half-life of 243.66&nbsp;days, is the least active radioisotope, followed by {{chem|72|Zn}} with a half-life of 46.5&nbsp;hours. Zinc has 10 [[nuclear isomer]]s, of which <sup>69m</sup>Zn has the longest half-life, 13.76 h. The superscript ''m'' indicates a [[metastable]] isotope. The nucleus of a metastable isotope is in an [[excited state]] and will return to the [[ground state]] by emitting a [[photon]] in the form of a [[gamma ray]]. {{chem|61|Zn}} has three excited metastable states and {{chem|73|Zn}} has two. The isotopes {{chem|65|Zn}}, {{chem|71|Zn}}, {{chem|77|Zn}} and {{chem|78|Zn}} each have only one excited metastable state.
-The most common [[decay mode]] of a [[radioisotope]] of zinc with a [[mass number]] lower than 66 is [[positron emission]] (β<sup>+</sup>), resulting an isotope of copper.{{NUBASE2020|ref}}
+The most common [[decay mode]] of a [[radioisotope]] of zinc with a [[mass number]] lower than 66 is [[positron emission]] (β<sup>+</sup>), resulting an isotope of copper.
 :{{nuclide|zinc|n}} → {{nuclide|copper|n}} + {{SubatomicParticle|link=yes|positron}} + {{SubatomicParticle|link=yes|Electron neutrino}}