Periodic Table of the Elements

lawrencium	Atomic number: 103 Atomic weight: 262 Symbol: Lr Group number: (actinide) Electronic configuration: [Rn].5f¹⁴.7s².7p¹ (tentative)
Description General information Physical data Radii Electronegativities Solid state structure Temperatures Enthalpies Ionization Enthalpies Isotopes Further information

Description

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

General information

Discoveror: Albert Ghiorso, Torbjorn Sikkeland, Almon Larsh, Robert M. Latimer
Date discovered: 1961
Discovered at: United States
Meaning of name: Temporary IUPAC nomenclature. The origin of the Amercian Chemical Society preferred name is Ernest O. "Lawrence", inventor of the cyclotron

Physical data

Standard state: unknown but presumably a solid at 298 K
Colour: /TR>

Isotopes

This section gives some data for naturally occurring isotopes.

Nominal mass Accurate mass % natural abundance

nil

Nominal mass	Accurate mass	% natural abundance
		nil

Further Information

Additional information about WebElements 1.2.2
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For further information please try WebElements version 2
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Copyright 1997 Mark Winter
Department of Chemistry at the University of Sheffield, Sheffield S3 7HF, England.

The current version of this document is at http://www.shef.ac.uk/~chem/web-elements-I/Lr.html

lawrencium

Description

General information

Physical data

Isotopes

Further Information