Chlorine-37

Chlorine-37, 37Cl
General
Symbol37Cl
Nameschlorine-37, 37Cl, Cl-37
Protons (Z)17
Neutrons (N)20
Nuclide data
Natural abundance24.23%
Isotope mass36.965903 Da
Isotopes of chlorine
Complete table of nuclides

Chlorine-37 (37
Cl
), is one of the stable isotopes of chlorine, the other being chlorine-35 (35
Cl
). Its nucleus contains 17 protons and 20 neutrons for a total of 37 nucleons. Chlorine-37 accounts for 24.23% of natural chlorine, chlorine-35 accounting for 75.77%, giving chlorine atoms in bulk an apparent atomic weight of 35.45(1) g/mol.[1]

Remarkably, solar neutrinos were discovered by an experiment (Homestake Experiment) using a radiochemical method based on chlorine-37 transmutation.[2]

  1. ^ Prohaska, Thomas; et al. (2022-05-25), "Standard atomic weights of the elements 2021 (IUPAC Technical Report)", Pure and Applied Chemistry, vol. 94, no. 5, pp. 573–600, doi:10.1515/pac-2019-0603, ISSN 0033-4545, retrieved 2024-06-07{{citation}}: CS1 maint: date and year (link)
  2. ^ J.N. Bahcall (1969). "Neutrinos from the Sun". Scientific American. 221 (1): 28–37. Bibcode:1969SciAm.221a..28B. doi:10.1038/scientificamerican0769-28.