WebElements

Periodic Table

nobelium

Atomic number: 102
Atomic weight: 259
Symbol: No
Group number: (actinide)
Electronic configuration: [Rn].5f14.7s2

Description

Nobelium is a radioactive "rare earth metal" named after Alfred Nobel who discovered dynamite.

General information

Discoveror: Nobel Institute for Physics and later by Seaborg and others at Berkeley, California, USA
Date discovered: 1958
Discovered at: Sweden, USA
Meaning of name: Named after Alfred "Nobel", Swedish chemist who discovered dynamite, and founder of the Nobel Prizes

Physical data

Standard state: unknown but presumably a solid at 298 K
Colour: m
1st642

Isotopes

This section gives some data for naturally occurring isotopes.
Nominal mass Accurate mass % natural abundance
nil

Further Information

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/No.html