Thorium Element Cube Historical Artifacts New Mexico under the code

New Mexico under the code name "Trinity"

3% is U-238

from Greek

The arsenic in these cubes is pure arsenic encapsulated in a glass ampule to prevent oxidation

Thorium Element Cube Historical Artifacts New Mexico under the codeThorium's atomic number is 90 and its symbol is Th. Thorium is silvery and tarnishes black when it is exposed to air, forming thorium dioxide; it is moderately soft, malleable, and has a high melting point. All known thorium isotopes are unstable. The most stable isotope, 232Th, has a half life of 14. 05 billion years, or about the age of the universe Thorium was discovered in 1828 by the Norwegian amateur mineralogist Morten Thrane Esmark and