Cèṭa'an:Infobox aktinium

Aktinium, ₀₀Ac
	Cèṭa'an:Infobox element/symbol-to-top-image/caption
Aktinium
Pronunciation	Cèṭa'an:Infobox element/pronunciation
Allotropes	Cèṭa'an:Infobox element/symbol-to-allotropes
Appearance	putih keperakan, bersinar dengan cahaya biru yang menakutkan; terkadang dengan pendaran emas
Mass number	Cèṭa'an:Infobox element/symbol-to-most-stable-isotope
Aktinium in the periodic table
	Cèṭa'an:Infobox element/periodic table
Group	Cèṭa'an:Infobox element/symbol-to-group
Period	Cèṭa'an:Infobox element/symbol-to-period
Block	Cèṭa'an:Infobox element/block format
Electron configuration	Cèṭa'an:Infobox element/symbol-to-electron-configuration
Electrons per shell	2, 8, 18, 32, 18, 9, 2
Physical properties
Phase at STP	padat
Melting point	1500 K (1227 °C, 2240 °F) (estimasi)
Boiling point	3500±300 K (3200±300 °C, 5800±500 °F) (ekstrapolasi)
Density (near r.t.)	10 g/cm3
Heat of fusion	14 kJ/mol
Heat of vaporization	400 kJ/mol
Molar heat capacity	27,2 J/(mol·K)
Atomic properties
Oxidation states	Cèṭa'an:Infobox element/symbol-to-oxidation-state
Electronegativity	Pauling scale: 1,1
Ionization energies	1st: 499 kJ/mol ; 2nd: 1170 kJ/mol ; 3rd: 1900 kJ/mol ; (more) ;
Covalent radius	215 pm
	Cèṭa'an:Infobox element/spectral lines
Other properties
Natural occurrence	Cèṭa'an:Infobox element/symbol-to-occurrence
Crystal structure	Cèṭa'an:Infobox element/crystal structure Cèṭa'an:Infobox element/crystal structure
Thermal conductivity	12 W/(m⋅K)
CAS Number	7440-34-8
History
Discovery and first isolation	Friedrich Oskar Giesel (1902)
Named by	André-Louis Debierne (1899)
Symbol	Cèṭa'an:Infobox element/symbol-to-symbol-etymology
Isotopes of aktiniumCèṭa'an:V
	Template:infobox aktinium isotopes does not exist
	Cèṭa'an:Category-inline; abâs; Parembhâghân; beccè; \| references

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Cèṭa'an:Kotak info aktinium

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↑ Wall, Greg (8 September 2003). "C&EN: It's Elemental: The Periodic Table - Actinium". C&EN: It's Elemental: The Periodic Table. Chemical and Engineering News. Diakses tanggal 2 June 2011.
↑ ^2,0 ^2,1 ^2,2 Kirby, Harold W.; Morss, Lester R. (2006). "Actinium". The Chemistry of the Actinide and Transactinide Elements. hlm. 18. doi:10.1007/1-4020-3598-5_2. ISBN 978-1-4020-3555-5.

[1] Wall, Greg (8 September 2003). "C&EN: It's Elemental: The Periodic Table - Actinium". C&EN: It's Elemental: The Periodic Table. Chemical and Engineering News. Diakses tanggal 2 June 2011.

[Kirby-2] 2,0 ^2,1 ^2,2 Kirby, Harold W.; Morss, Lester R. (2006). "Actinium". The Chemistry of the Actinide and Transactinide Elements. hlm. 18. doi:10.1007/1-4020-3598-5_2. ISBN 978-1-4020-3555-5.

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