Curium Facts

Curium Chemical & Physical Properties

Curium
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Periodic Table of the Elements

Curium Basic Facts

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

Curium Physical Data

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.)

 

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Helmenstine, Anne Marie, Ph.D. "Curium Facts." ThoughtCo, Mar. 10, 2017, thoughtco.com/curium-element-facts-606522. Helmenstine, Anne Marie, Ph.D. (2017, March 10). Curium Facts. Retrieved from https://www.thoughtco.com/curium-element-facts-606522 Helmenstine, Anne Marie, Ph.D. "Curium Facts." ThoughtCo. https://www.thoughtco.com/curium-element-facts-606522 (accessed May 21, 2018).