Platina
78
Pt
Gruppe
10
Periode
6
Blokk
d
Proton
Elektron
Nøytron
78
78
117
Generelle eigenskapar
Atomnummer
78
Atommasse
195,084
Massetal
195
Kategori
Transisjonsmetall
Farge
Grå
Radioaktiv
Nei
From the Spanish word platina, meaning silver
Krystallstruktur
Flatesentrert kubisk
Historie
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.
Elektron per energinivå
2, 8, 18, 32, 17, 1
Elektronkonfigurasjon
[Xe] 4f14 5d9 6s1
Platinum exists in higher abundances on the Moon and in meteorites
Fysiske eigenskapar
Tilstandsform
Fast stoff
Tettleik
21,45 g/cm3
Smeltepunkt
2041,45 K | 1768,3 °C | 3214,94 °F
Kokepunkt
4098,15 K | 3825 °C | 6917 °F
Smeltevarme
20 kJ/mol
Fordampingsvarme
490 kJ/mol
Spesifikk varmekapasitet
0,133 J/g·K
Førekomst i jordskorpa
3,7×10-6%
Førekomst i universet
5×10-7%
CAS-nummer
7440-06-4
PubChem CID-nummer
23939
Atom eigenskapar
Atomradius
139 pm
Kovalent radius
136 pm
Elektronegativitet
2,28 (Paulings skala)
Ioniseringspotensial
8,9587 eV
Molart volum
9,10 cm3/mol
Termisk konduktivitet
0,716 W/cm·K
Oksidasjonstrinn
2, 4, 5, 6
Bruksområde
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
Isotopar
Stabile isotopar
192Pt, 194Pt, 195Pt, 196Pt, 198PtUstabile isotopar
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