Zn70

Zn-70 is the zinc atom with mass number 70. It has 30 protons and 40 neutrons, and it is one of the five stable isotopes of zinc, alongside Zn-64, Zn-66, Zn-67, and Zn-68.

Natural occurrence is limited: Zn-70 accounts for about 0.6% of natural zinc. The remaining abundance is distributed among the other stable isotopes, with small variations by sample. As a stable isotope, Zn-70 does not undergo radioactive decay and has no measurable half-life.

Nuclear and physical properties: With Z = 30 and A = 70, the neutron number is 40, giving a neutron-to-proton ratio of about 1.33. Its stability means it contributes to the atomic weight of zinc but only slightly due to its low natural abundance.

Uses and significance: Zn-70 is used in isotopic ratio measurements in geochemistry, biology, and materials science. Stable isotopes like Zn-70 serve as tracers and references in mass spectrometry and isotope-dfractionation studies, helping researchers investigate zinc pathways, metabolism, and environmental processes. In nuclear physics, Zn-70 is of interest for studying nuclear structure and binding, as part of broader investigations of stable isotopes near the iron peak.

Overall, Zn-70 is a minor but stable constituent of natural zinc, notable primarily for its role in isotope analysis and as a data point in studies of nuclear properties and elemental cycles.