In the properties table for each element it says how many stable / unstable isotopes there are. It will be really useful to have instead the masses of the most important ones and their relative abundances.
In that page it's possible to get isotope tables for all elements in several file formats (html, txt, etc.). The abundances ("isotopic composition") are normalized to 1.
petrkle
commented
2 months ago
In the properties table for each element it says how many stable / unstable isotopes there are. It will be really useful to have instead the masses of the most important ones and their relative abundances.
I found the following resources:
https://www.nist.gov/pml/atomic-weights-and-isotopic-compositions-relative-atomic-masses
In that page it's possible to get isotope tables for all elements in several file formats (html, txt, etc.). The abundances ("isotopic composition") are normalized to 1.
Also:
http://moltensalt.org/references/static/downloads/pdf/stable-isotopes.pdf
https://www.sisweb.com/referenc/source/exactmas.htm
Many thanks for this incredible useful tool!