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  • ๐Ÿ‡ฌ๐Ÿ‡ง Curium
  • ๐Ÿ‡จ๐Ÿ‡ณ ้‹ฆ
  • ๐Ÿ‡ณ๐Ÿ‡ฑ Curium
  • ๐Ÿ‡ซ๐Ÿ‡ท Curium
  • ๐Ÿ‡ฉ๐Ÿ‡ช Curium
  • ๐Ÿ‡ฎ๐Ÿ‡ฑ ืงื™ื•ืจื™ื•ื
  • ๐Ÿ‡ฎ๐Ÿ‡น Curio
  • ๐Ÿ‡ฏ๐Ÿ‡ต ใ‚ญใƒฅใƒชใ‚ฆใƒ 
  • ๐Ÿ‡ต๐Ÿ‡น Curandeiro
  • ๐Ÿ‡ท๐Ÿ‡บ ะšัŽั€ะธะน
  • ๐Ÿ‡ช๐Ÿ‡ธ Curio
  • ๐Ÿ‡ธ๐Ÿ‡ช Curium

Curium: the essentials

Curium atoms have 96 electrons and the shell structure is 2.8.18.32.25.9.2. The ground state electronic configuration of neutral curium is [Rn].5f7.6d1.7s2 and the term symbol of curium is 9D2.

Curium: description  

Curium is a hard, brittle, radioactive silvery metal. It does not occur in nature and must be made in a nuclear reactor by neutron capture reactions from plutonium and americium isotopes. It tarnishes slowly in dry air at room temperature. Curium was first produced in 1944 at the University of California, Berkeley in the USA in a cyclotron by bombarding plutonium-239 (239Pu) with α-particles. It was isolated in visible quantities as the hydroxide, Cm(OH)3, in 1947.

Most compounds of Cm(III) are faintly yellow. If curium enters the body it accumulates in the bones, and is therefore very toxic as its radiation destroys the red-cell forming mechanism. Curium is a radioactive rare earth metal. The most stable isotope is 247Cm which has a half-life of 16 million years. Curium is probably present in uranium ores. It has a few specialised uses but only a few of its compounds are known.

Curium: physical properties

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Curium: heat properties

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Curium: atom sizes

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Curium: electronegativities

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Curium: orbital properties

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Curium: abundances

More geological data...

Curium: crystal structure

Cm crystal structure
The solid state structure of curium is: bcc (body-centred cubic).

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Curium: biological data

Curium has no biological role.

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Curium: uses

Uses...

Curium: reactions

Reactions of curium as the element with air, water, halogens, acids, and bases where known.

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Curium: binary compounds

Binary compounds with halogens (known as halides), oxygen (known as oxides), hydrogen (known as hydrides), and other compounds of curium where known.

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Curium: compound properties

Bond strengths; lattice energies of curium halides, hydrides, oxides (where known); and reduction potentials where known.

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Curium: history

Curium was discovered by Glenn T. Seaborg, Ralph A. James, Albert Ghiorso in 1944 at USA. Origin of name: named after Pierre and Marie "Curie".

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Curium: isotopes

Isotope abundances of curium
Isotope abundances of curium with the most intense signal set to 100%.

More isotope and NMR data...

Curium: isolation

Isolation: coming soon!