Bitriennium (Bte)

Bitriennium is the systematic name of the theoretical 239-шы element in the periodic table with a symbol of Bte and atomic number of 239. Bitriennium, also known as element 239, has екі жүз отыз тоғыз protons in its nucleus, and екі жүз отыз тоғыз electrons in its shells.