Amẹrísíọ̀m

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(Àtúnjúwe láti Americium)
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Americium, 95Am
Fáìlì:Americium2.jpg
Americium
Pípè /ˌæmˈrɪsiəm/ (AM-ə-RISS-ee-əm)
Ìhànsójúsilvery white
nọ́mbà ìsújọ[243]
Americium ní orí tábìlì àyè
Hydrogen Helium
Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon
Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon
Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon
Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon
Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson
Eu

Am

(Uqp)
plutoniumamericiumcurium
Nọ́mbà átọ̀mù (Z)95
Ẹgbẹ́group n/a
Àyèàyè 7
Àdìpọ̀Àdìpọ̀-f
Ẹ̀ka ẹ́límẹ́ntì  Actinide
Ìtò ẹ̀lẹ́ktrọ́nù[Rn] 5f7 7s2
Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan2, 8, 18, 32, 25, 8, 2
Àwọn ohun ìní ara
Ìfarahàn at STPsolid
Ìgbà ìyọ́1449 K ​(1176 °C, ​2149 °F)
Ígbà ìhó2880 K ​(2607 °C, ​4725 °F)
Kíki (near r.t.)12 g/cm3
Heat of fusion14.39 kJ/mol
Molar heat capacity62.7 J/(mol·K)
 pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 1239 1356
Atomic properties
Oxidation states+2, +3, +4, +5, +6, +7 Àdàkọ:Infobox element/symbol-to-oxidation-state/comment
ElectronegativityPauling scale: 1.3
Atomic radiusempirical: 173 pm
Covalent radius180±6 pm
Color lines in a spectral range
Spectral lines of americium
Other properties
Natural occurrencesynthetic
Crystal structurehexagonal
Hexagonal crystal structure for americium
Thermal conductivity10 W/(m·K)
Magnetic orderingno data
CAS Number7440-35-9
Main isotopes of americium
Iso­tope Abun­dance Half-life (t1/2) Decay mode Pro­duct
241Am syn 432.2 y SF - -
α 5.486 237Np
242mAm syn 141 y IT 0.049 242Am
α 5.637 238Np
SF - -
243Am syn 7370 y SF - -
α 5.275 239Np
Àdàkọ:Category-inline
| references

Amẹrísíọ̀m tabi Americium je apilese alasopapo to ni ami-idamo Am ati nomba atomu 95. Gege bi apilese onide alagbararadio, americium je aktinidi ti o je bibosowo Glenn T. Seaborg ni 1944 nigba to n digbolu plutonium pelu awon neutroni be sini o je apilese teyinuraniom kerin to je wiwari. Won soloruko fun orile Amerika, ni ibaramu mo europium.[1]


Itokasi[àtúnṣe | àtúnṣe àmìọ̀rọ̀]

  1. Seaborg, Glenn T. (1946). "The Transuranium Elements". Science 104 (2704): 379–386. doi:10.1126/science.104.2704.379. PMID 17842184. http://www.jstor.org/stable/1675046.