کينډۍ:Infobox americium

Americium, ₉₅Am
	Spectral lines of americium
عمومي خواص
Pronunciation	/ˌæməˈrɪsiəm/ ; AM-ə-RIS-ee-əm
Appearance	silvery white
Americium په دوراني جدول کې
plutonium ← americium → curium	‍
اټومي شمیره (Z)	95
گروپ, پیریود	group n/a, period 7
بلاک	f-block
Element category	actinide
Mass number	243 (most stable isotope)
Electron configuration	[Rn] 5f7 7s2
Electrons per shell	2, 8, 18, 32, 25, 8, 2
فزیکي خواص
حالت (at STP)	جامد
دويلې کيدو ټکى	1449 K (1176 °C, 2149 °F)
يشنا ټکی	2880 K (2607 °C, 4725 °F) (calculated)
Density near r.t.	12 g/cm3
Heat of fusion	14.39 kJ/mol
Molar heat capacity	62.7 J/(mol·K)
اټومي خواص
Oxidation states	8, 7, 6, 5, 4, 3, 2 (an amphoteric oxide)
Electronegativity	Pauling scale: 1.3
Ionization energies	1st: 578 kJ/mol ; ;
Atomic radius	empirical: 173 pm
Covalent radius	180±6 pm
Miscellanea
Crystal structure	double hexagonal close-packed (dhcp) Double hexagonal close packed crystal structure for americium
د تودوخې تېرېدنه	10 W/(m·K)
Electrical resistivity	0.69 µΩ·m
Magnetic ordering	paramagnetic
Magnetic susceptibility (χmol)	+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)
Main isotopes of americium
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Element navigation

PTamericiumPT

Pu ←

iso
95Am

→ Cm

د سرچينو همدا لړليک په ليکنه کې نه ښکاري.

↑ 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.
↑ Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 0-8493-0464-4.

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