Americium
95Am
Eu ↑ Am ↓ (Uqs) Periodic table plutonium ← americium → curium
Panagway
silvery white
Kinatibuk-ang mga kinaiya
Ngalan, simbolo, kaiphan	americium, Am, 95
Paglitok	/ˌæməˈrɪsiəm/ [[Help:Pronunciation respelling key|Plantilya:Smallcaps all-ə-Plantilya:Smallcaps all-ee-əm]]
Kategoriyang elemento	aktinido
Group, period, block	3, 7, f
Gibug-aton sa atomo	(243)
Kontorno sa elektron	[Rn] 5f7 7s2 2, 8, 18, 32, 25, 8, 2
History
Pagkadiskobre	Glenn T. Seaborg, Ralph A. James, Leon O. Morgan, Albert Ghiorso (1944)
Physical properties
Phase	magahi
Density (near r.t.)	12 g·cm−3
Melting point	1449 K, 1176 °C, 2149 °F
Boiling point	2880 K, 2607 °C, 4725 °F
Heat of fusion	14.39 kJ·mol−1
Molar heat capacity	62.7 J·mol−1·K−1
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 1239 1356
Atomic properties
Oxidation states	7, 6, 5, 4, 3, 2 (amphoteric oxide)
Electronegativity	1.3 (Pauling scale)
Ionization energies	1st: 578 kJ·mol−1
Atomic radius	173 pm
Covalent radius	180±6 pm
Miscellanea
Crystal structure	hexagonal
Magnetic ordering	paramagnetic
Electrical resistivity	0.69[1] µΩ·m
Thermal conductivity	10 W·m−1·K−1
CAS registry number	7440-35-9
Most stable isotopes
Main article: Isotopes of americium
iso NA half-life DM DE (MeV) DP 241Am trace 432.2 y SF - - α 5.486 237Np 242mAm trace 141 y IT 0.049 242Am α 5.637 238Np SF - - 243Am trace 7370 y SF - - α 5.275 239Np
v t e · r

Ang amerisyo (Iningles americium) mao ang elementong kimiko sa talaang peryodiko nga may simbolo nga Am ug kaiphan nga atomik 95. Ang amerisyo mao ang aktinido.

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.