Template:Infobox americium

	child table, as reused in {IB-Am} v; e; h;
Main isotopes of americium
SF	–
ε	242Pu
α	238Np
SF	–

Americium, ₉₅Am
	File:Americium microscope.jpg
Americium
Pronunciation	/ˌæməˈrɪsiəm/ Template:Error-small (AM-ər-ISS-ee-əm)
Appearance	silvery white
Mass number	[243]
Americium in the periodic table
Atomic number (Z)	95
Group	f-block groups (no number)
Period	period 7
Block	f-block
Electron configuration	[Rn] 5f7 7s2
Electrons per shell	2, 8, 18, 32, 25, 8, 2
Physical properties
Phase at STP	solid
Melting point	1449 K (1176 °C, 2149 °F)
Boiling point	2880 K (2607 °C, 4725 °F) (calculated)
Density (near r.t.)	12 g/cm3
Heat of fusion	14.39 kJ/mol
Molar heat capacity	28 J/(mol·K)
Atomic properties
Oxidation states	common: +3; +2, +4, +5, +6, +7
Electronegativity	Pauling scale: 1.3
Ionization energies	1st: 578 kJ/mol ; ;
Atomic radius	empirical: 173 pm
Covalent radius	180±6 pm
	Color lines in a spectral rangeSpectral lines of americium
Other properties
Natural occurrence	synthetic
Crystal structure	double hexagonal close-packed (dhcp) Double hexagonal close packed crystal structure for americium
Thermal conductivity	10 W/(m⋅K)
Electrical resistivity	0.69 µΩ⋅m
Magnetic ordering	paramagnetic
Molar magnetic susceptibility	+1000.0×10−6 cm3/mol
CAS Number	7440-35-9
History
Naming	after the Americas
Discovery	Glenn T. Seaborg, Ralph A. James, Leon O. Morgan, Albert Ghiorso (1944)
Isotopes of americium v; e;
SF	–
ε	242Pu
α	238Np
SF	–
	File:Symbol category class.svg Category: Americium; view; talk; edit; \| references

Am · Americium
Pu ← ibox Pu	^iso ₉₅Am [e] IB-Am [e] IBisos [e]	→ Cm ibox Cm
File:Symbol category class.svg cat:Am (0) File:Symbol category class.svg cat:Am-isotopes (0) Commons Wikidata:Q1872 File:Wiktionary-logo.svg Wiktionary
indexes by PT (page) v e

Data sets read by {{Infobox element}}
Name and identifiers	view edit
Symbol etymology (11 non-trivial)	view edit
Top image (caption, alt)	caption: view edit alt: view edit
Pronunciation	view edit
Allotropes (overview)	view edit
Group (overview)	view edit
Period (overview)	view edit
Block (overview)	view edit
Natural occurrence	view edit
Phase at STP	view edit
Oxidation states	view edit
Spectral lines image	view edit
Electron configuration (cmt, ref)	view edit
Isotopes
Standard atomic weight	view edit
most stable isotope	view edit
File:Notification-icon-Wikidata-logo.svg Wikidata
Wikidata *	view edit
* Not used in {{Infobox element}} (2023-01-01) See also {{Index of data sets}} · Cat:data sets (0) · (this table: v )

References

↑ ^1.0 ^1.1 Muller, W.; Schenkel, R.; Schmidt, H. E.; Spirlet, J. C.; McElroy, D. L.; Hall, R. O. A.; Mortimer, M. J. (1978). "The electrical resistivity and specific heat of americium metal". Journal of Low Temperature Physics. 30 (5–6): 561. Bibcode:1978JLTP...30..561M. doi:10.1007/BF00116197.
↑ ^2.0 ^2.1 ^2.2 ^2.3 Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. p. 28. doi:10.1016/C2009-0-30414-6. ISBN 978-0-08-037941-8.
↑ Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 0-8493-0464-4.
↑ ^4.0 ^4.1 Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021). "The NUBASE2020 evaluation of nuclear properties" (PDF). Chinese Physics C. 45 (3) 030001. doi:10.1088/1674-1137/abddae.

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