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Element: lawrencium

Name : lawrencium

Symbol : Lr

Atomicnumber : 103

Relativeatomicmass : [ 262 ] (longest lived isotope)

Standardstate : presumably a solid at 298 K

Appearance : unknown, but probably metallic and silvery white or grey in appearance

Classification : Metallic

Groupinperiodictable : 3

Groupname : (none)

Periodinperiodictable : 7

Blockinperiodictable : d

Shellstructure : 2.8.18.32.32.9.2

CASRegistry : 22537-19-5

Description : Lawrencium is a synthetic "rare earth metal" which does not occur in the environment.