displaystyle ce ^238_92U->[ce +6(n,gamma )][-2 beta ^-]_94^244Pu Some 238U atoms, however, could absorb two extra neutrons (for a total of 17), leading to 255Es, as well as from the 255Fm isotope of another new element, fermium. [7] The discovery of the new elements and the related new data on https://daltonlaqfu.glifeblog.com/3296015/acrylic-periodic-table-of-elements-secrets