Platina
78
Pt
Skupina
10
Perioda
6
Blok
d
Protoni
Elektroni
Neutroni
78
78
117
Opća svojstva
Atomski broj
78
Relativna atomska masa
195,084
Maseni broj
195
Kategorija
Prijelazni metali
Boja
Siva
Radioaktivan
Ne
Od španjolske riječi platina, srebro
Kristalna struktura
Kubna plošno centrirana
Povijest
Platinum was first used by pre-Columbian South American natives to produce artifacts.
Antonio de Ulloa published his findings about platinum in 1748, but Sir Charles Wood also investigated the metal in 1741.
First reference to it as a new metal was made by William Brownrigg in 1750.
Antonio de Ulloa published his findings about platinum in 1748, but Sir Charles Wood also investigated the metal in 1741.
First reference to it as a new metal was made by William Brownrigg in 1750.
Elektrona po ljusci
2, 8, 18, 32, 17, 1
Elektronska konfiguracija
[Xe] 4f14 5d9 6s1
Platinum exists in higher abundances on the Moon and in meteorites
Fizikalna svojstva
Agregacijsko stanje
Čvrsto
Gustoća
21,45 g/cm3
Talište
2041,45 K | 1768,3 °C | 3214,94 °F
Vrelište
4098,15 K | 3825 °C | 6917 °F
Toplina taljenja
20 kJ/mol
Toplina isparavanja
490 kJ/mol
Specifični toplinski kapacitet
0,133 J/g·K
Zastupljenost u Zemljinoj kori
3,7×10-6%
Zastupljenost u svemiru
5×10-7%
CAS broj
7440-06-4
PubChem CID broj
23939
Atomska svojstva
Atomski radijus
139 pm
Kovalentni radijus
136 pm
Elektronegativnost
2,28 (Paulingova ljestvica)
Potencijal ionizacije
8,9587 eV
Atomski volumen
9,10 cm3/mol
Toplinska vodljivost
0,716 W/cm·K
Stanja oksidacije
2, 4, 5, 6
Primjene
The most common use of platinum is as a catalyst in chemical reactions.
Platinum is used in jewelry, decoration and dental work.
Platinum-cobalt, an alloy of roughly three parts platinum and one part cobalt, is used to make relatively strong permanent magnets.
Platinum-based anodes are used in ships, pipelines, and steel piers.
Platinum is used in jewelry, decoration and dental work.
Platinum-cobalt, an alloy of roughly three parts platinum and one part cobalt, is used to make relatively strong permanent magnets.
Platinum-based anodes are used in ships, pipelines, and steel piers.
Platinum is considered to be non-toxic
Izotopi
Stabilni izotopi
192Pt, 194Pt, 195Pt, 196Pt, 198PtNestabilni izotopi
166Pt, 167Pt, 168Pt, 169Pt, 170Pt, 171Pt, 172Pt, 173Pt, 174Pt, 175Pt, 176Pt, 177Pt, 178Pt, 179Pt, 180Pt, 181Pt, 182Pt, 183Pt, 184Pt, 185Pt, 186Pt, 187Pt, 188Pt, 189Pt, 190Pt, 191Pt, 193Pt, 197Pt, 199Pt, 200Pt, 201Pt, 202Pt