Definition: Lawrencium is the name for the element with atomic number 103 and is represented by the symbol Lr.
It is a member of the actinide group.
It is a member of the actinide group.
Lawrencium Definition
By Anne Marie Helmenstine, Ph.D., About.com Guide
This diagram of a lawrencium atom shows the electron shell.
Greg Robson,Creative Commonns License
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