Berkelium Bags

Description: A black background displays information about the element Berkelium. In large white font is 'Bk'. Above this are 'Atomic', '(247)', '601.1', '1.30', and '97'. To the right of 'Bk' are '+4', '+3', and '+2'. Below 'Bk' is '[Rn] 7s² 5f9', followed by 'Berkelium' and 'Actinide'.

Description: A black and white representation of a periodic table element entry for Berkelium. The element symbol 'Bk' is prominently displayed in large white font. Above it, text reads 'Atomic mass (247) 601.1' and '97'. Below 'Bk' is 'Berkelium', followed by 'Electron configuration' and 'Actinide'. Numerical data is also present: '200' and '+4+3' twice.

Description: The actinides are not only radioactive, but they have been used in warfare. Little Boy was an uranium bomb dropped on Hiroshima and Fat Man was a plutonium bomb dropped on Nagasaki.