92-U-238, Uranium
https://sites.google.com/view/isotope-evidence/92-u-238
Uranium Uran
https://da.wikipedia.org/wiki/Uran
https://en.wikipedia.org/wiki/Uranium-238
½-life:
238U 4,468 * 10^9 y
92-U-238, Uranium
https://sites.google.com/view/isotope-evidence/92-u-238
Uranium Uran
https://da.wikipedia.org/wiki/Uran
https://en.wikipedia.org/wiki/Uranium-238
½-life:
238U 4,468 * 10^9 y