1. Education

Americium

Element Photos

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

©2013 About.com. All rights reserved.