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This is a disk of americium-241 viewed under a microscope.
This is a disk of americium-241 viewed under a microscope.Bionerd, Creative Commons License
Americium is a lustrous silvery-white metal that slowly tarnishes in air.
Americium is a lustrous silvery-white metal that slowly tarnishes in air. The triangle in the glass tube is the world's first sample of americium, produced in a 60-inch cyclotron in 1944.Lawrence Berkeley National Lab
This diagram of an americium atom shows the electron shell.
This diagram of an americium atom shows the electron shell.Greg Robson,Creative Commonns License