Proprietà

CAS Number7440-35-9
PubChem CIDna
Raggio Atomico173
Volume Molare17,78
Massa Atomica[243]
Bloccof
Punto di Ebollizione2.607
Bulk Modulus
CategoriaAttinidi
Struttura CristallinaEsagonale Semplice
ColoreArgento
Raggio Covalente180
Densità13,69
Electrical Resistivity
Configurazione Elettronica[Rn] 5f7 7s2
Elettroni per shell2, 8, 18, 32, 25, 8, 2
Elettronegatività1,3
Electrons95
Gruppona
Calore di Fusionena
Calore di Evaporazionena
Potenziale di Ionizzazione5,974
Magnetic Ordering
Magnetic Susceptibility
Massa[243]
Mass Number95
Punto di Fusione1.176
NomeAmericio
Neutroni148
Numero Atomico243
Stato di Ossidazione2, 3, 4, 5, 6
Periodo7
FaseSolido
Poisson Ratio
Protoni95
Shear Modulus
Capacità Termica Specifica-
SimboloAm
Conduttività Termica0,1
Van der Waals radius
Young's Modulus
Abbondanza
Abbondanza sulla crosta terrestrena
Abbondanza nell'universona
Am Americio 95 (243) 7 f 95 994.0 2607.0 [Rn] 5f7 7s2 2 8 18 32 25 8 2 13.7 None Silver Hexagonal 1.3 {"1":"578"} 578 +3,4,5,6 1.84 20.8 10.0 1 7388 y 1.065×104y AlphaEmission Solid, Actinide, Radioactive, Synthetic am-er-ISH-i-em Silvery-white, artificially produced radioactive metal. Americium-241 is currently used in smoke detectors. Produced by bombarding plutonium with neutrons. PB38NyjmneE Americium
Gold has been known since prehistoric times and was the first metal used by humans.

Gold artifacts dated to 5000 years ago have been found in Egyptian tombs.

Gold of 98% purity has been found in Nahal Qunah in the ancient kingdom of Israel, dating from about 6000 years ago. Il nome deriva dal latino aurum 95 1944 Glenn Seaborg, Ralph James., L. Morgan, Albert Ghiorso USA From the English word "America"

Isotopi dell'oro

Standard Atomic Weight

Isotopi Stabili

Isotopi Instabili

231Am 232Am 233Am 234Am 235Am 236Am 237Am 238Am 239Am 240Am 241Am 242Am 243Am 244Am 245Am 246Am 247Am 248Am 249Am

L'oro è considerato non tossico
India is the world's largest single consumer of gold
Gold is used in coinage and is a standard for monetary systems in many countries.

It is also extensively used for jewelry, decoration, dental work, and for plating.

Gold is used widely in microelectronic circuits to ensure reliable, corrosion-resistant and static-free performance.

Gold leaf, flake or dust is used in some gourmet foods as decorative ingredient.