Svojstva

CAS broj7440-57-5
PubChem CID23985
Atomski radijus144
Atomski volumen10,2
Relativna atomska masa196,967
Blokd
Vrelište2.856
Modul stišljivosti
KategorijaPrijelazni metali
Kristalna strukturaKubna plošno centrirana
BojaZlatna
Kovalentni radijus136
Gustoća19,282
Električna otpornost
Elektronska konfiguracija[Xe] 4f14 5d10 6s1
Elektrona po ljusci2, 8, 18, 32, 18, 1
Elektronegativnost2,54
Elektroni79
Skupina11
Toplina taljenja12,5
Toplina isparavanja330
Potencijal ionizacije9,226
Magnetsko redanje
Magnetska osjetljivost
Masa196,967
Maseni broj79
Talište1.064,2
NazivZlato
Neutroni118
Atomski broj197
Stanja oksidacije-1, 1, 2, 3, 5
Perioda6
Agregacijsko stanjeČvrsto
Poissonov omjer
Protoni79
Modul smicanja
Specifični toplinski kapacitet0,129
SimbolAu
Toplinska vodljivost3,17
Van der Waalsov radijus
Youngov modul
Obilnost
Zastupljenost u Zemljinoj kori3.1×10-7%
Zastupljenost u svemiru6×10-8%
Au Zlato 79 196.966569 11 6 d 79 1064.0 3080.0 [Xe] 4f14 5d10 6s1 2 8 18 32 18 1 19.3 3.1E-7% Gold Cubic: Face centered 2.5 1.92 {"1":"890.1","2":"1980"} 890 222.8 +3,1 1.46 10.2 12.36 324.43 0.128 317.0 0 Solid, Diamagnetic, Conductor, TransitionMetal, Metal, Stable, Natural GOLD Soft, malleable, bright yellow metal. Very malleable. Used in electronics, jewelry and coins. It is a good reflector of infrared radiation, so a thin film of gold is applied to the glass of skyscrapers to reduce internal heating from sunlight. Found in veins in the crust, with cooper ore and native . 3OoLHe-4aNA Gold
Gadolinium was first detected spectroscopically in 1880 by the Swiss chemist Jean Charles Galissard de Marignac who separated its oxide.

He observed spectroscopic lines due to gadolinium in samples of gadolinite and in the separate mineral cerite.

The metal was isolated by Paul Emile Lecoq de Boisbaudran in 1886. Od gadolinita, minerala imenovanom po Gadolinu, finskom kemičaru 79 From the Anglo-Saxon word "gold" (the origin of the symbol Au is the Latin word "aurum" meaning "gold")

Isotopes of Gadolinium

Standard Atomic Weight

196.966569(5)

Stabilni izotopi

197Au

Nestabilni izotopi

169Au 170Au 171Au 172Au 173Au 174Au 175Au 176Au 177Au 178Au 179Au 180Au 181Au 182Au 183Au 184Au 185Au 186Au 187Au 188Au 189Au 190Au 191Au 192Au 193Au 194Au 195Au 196Au 198Au 199Au 200Au 201Au 202Au 203Au 204Au 205Au

Gadolinium is considered to be moderately toxic
Gadolinium has the highest neutron cross-section among any stable nuclides
Gadolinium is used to make gadolinium yttrium garnets which have microwave applications.

It is also used in intravenous radiocontrast agents in magnetic resonance imaging (MRI).

Gadolinium compounds are used for making green phosphors for color TV tubes, and in manufacturing compact discs.