Transuranium element

These two elements are generated by neutron capture in uranium ore with subsequent beta decays (e.g. 238U + n → 239U → 239Np → 239Pu).

The half-lives of these elements show a general trend of decreasing as atomic numbers increase.

[1] Transuranic elements are difficult and expensive to produce, and their prices increase rapidly with atomic number.

They are created through the bombardment of elements in a particle accelerator, in quantities on the atomic scale, and no method of mass creation has been found.

[7] Elements of the island of stability have potentially important military applications, including the development of compact nuclear weapons.