1. Education

Discuss in my forum

Curium Facts

Chemical & Physical Properties

By

Curium is so radioactive that it glows purple in the dark.

Curium is so radioactive that it glows purple in the dark.

The Actinide Group, Institute for Transuranium Elements Curium is a silvery-white radioactive metal.

Curium is a silvery-white radioactive metal.

The Actinide Group, Institute for Transuranium Elements This diagram of a curium atom shows the electron shell.

This diagram of a curium atom shows the electron shell.

Greg Robson,Creative Common License
Periodic Table of the Elements

Curium

Atomic Number: 96

Symbol: Cm

Atomic Weight: 247.0703

Discovery: G.T.Seaborg, R.A.James, A.Ghiorso, 1944 (United States)

Electron Configuration: [Rn] 5f7 6d1 7s2

Atomic Weight: 247.0703

Element Classification: Radioactive Rare Earth Element (Actinide Series)

Name Origin: Named in honor of Pierre and Marie Curie.

Density (g/cc): 13.51

Melting Point (K): 1340

Appearance: silvery, malleable, synthetic radioactive metal

Atomic Radius (pm): 299

Atomic Volume (cc/mol): 18.28

Pauling Negativity Number: 1.3

First Ionizing Energy (kJ/mol): (580)

Oxidation States: 4, 3

 

References: Los Alamos National Laboratory (2001), Crescent Chemical Company (2001), Lange's Handbook of Chemistry (1952), CRC Handbook of Chemistry & Physics (18th Ed.)

 

Return to the Periodic Table

Chemistry Encyclopedia

©2014 About.com. All rights reserved.