Egenskaper

CAS Number7440-35-9
PubChem CIDna
Atomradie173
Molvolym17,78
Atommassa[243]
Blockf
Kokpunkt2 607
Bulk Modulus
KategoriAktinider
KristallstrukturEnkelt hexagonalt
FärgSilver
Kovalent radie180
Densitet13,69
Electrical Resistivity
Elektronkonfiguration[Rn] 5f7 7s2
Elektroner per skal2, 8, 18, 32, 25, 8, 2
Elektronegativitet1,3
Electrons95
Gruppna
Smältvärmena
Ångbildningsvärmena
Jonisationspotential5,974
Magnetic Ordering
Magnetic Susceptibility
Massa[243]
Mass Number95
Smältpunkt1 176
NamnAmericium
Neutroner148
Atomnummer243
Oxidationstillstånd2, 3, 4, 5, 6
Period7
AggregationstillståndFast
Poisson Ratio
Protoner95
Shear Modulus
Specifik värmekapacitet-
TeckenAm
Värmeledningsförmåga0,1
Van der Waals radius
Young's Modulus
Förekomst
Abundance in Earth's crustna
Abundance in Universena
Am Americium 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. From the Latin word aurum meaning gold 95 1944 Glenn Seaborg, Ralph James., L. Morgan, Albert Ghiorso USA From the English word "America"

Guldisotoper

Standard Atomic Weight

Stabila isotoper

Instabila isotoper

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

Gold is considered to be non-toxic
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.