Platina
78
Pt
Skupina
10
Perioda
6
Blok
d
Protoni
Elektroni
Nevtroni
78
78
117
Splošne lastnosti
Vrstno število
78
Atomska teža
195,084
Masno število
195
Kategorija
Prehodne kovine
Barva
Siva
Radioaktivno
Ne
From the Spanish word platina, meaning silver
Kristalna struktura
Ploskovno centrirana kubična
Zgodovina
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.
Elektroni po lupinah
2, 8, 18, 32, 17, 1
Razporeditev elektronov
[Xe] 4f14 5d9 6s1
Platinum exists in higher abundances on the Moon and in meteorites
Fizikalne lastnosti
Faza snovi
Trdnina
Gostota
21,45 g/cm3
Tališče
2041,45 K | 1768,3 °C | 3214,94 °F
Vrelišče
4098,15 K | 3825 °C | 6917 °F
Talilna toplota
20 kJ/mol
Izparilna toplota
490 kJ/mol
Toplotna kapaciteta
0,133 J/g·K
Zastopanost v Zemljini skorji
3,7×10-6%
Zastopanost v vesolju
5×10-7%
CAS številka
7440-06-4
PubChem CID številka
23939
Atomske lastnosti
Atomski polmer
139 pm
Kovalentni polmer
136 pm
Elektronegativnost
2,28 (Paulingova lestvica)
Ionizacijski potencial
8,9587 eV
Atomski volumen
9,10 cm3/mol
Toplotna prevodnost
0,716 W/cm·K
Oksidacijska stanja
2, 4, 5, 6
Uporabe
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