Platina
78
Pt
Gruppe
10
Periode
6
Blokk
d
Protoner
Elektroner
Nøytroner
78
78
117
Generelle egenskaper
Atomnummer
78
Atomvekt
195,084
Massetall
195
Kategori
Transisjonsmetaller
Farge
Grå
Radioaktiv
Nei
From the Spanish word platina, meaning silver
Krystallstruktur
Face Centered Cubic
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.
Elektroner per energinivå
2, 8, 18, 32, 17, 1
Elektronkonfigurasjon
[Xe] 4f14 5d9 6s1
Platinum exists in higher abundances on the Moon and in meteorites
Fysikalske egenskaper
Fase
Fast stoff
Tetthet
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
Fordampningsvarme
490 kJ/mol
Spesifikk varmekapasitet
0,133 J/g·K
Forekomst i jordskorpa
3,7×10-6%
Forekomst i universet
5×10-7%
CAS Number
7440-06-4
PubChem CID Number
23939
Atomegenskaper
Atomradius
139 pm
Kovalent radius
136 pm
Elektronegativitet
2,28 (Pauling-skalaen)
Ioniseringsenergi
8,9587 eV
Molart volum
9,10 cm3/mol
Termisk ledningsevne
0,716 W/cm·K
Oksidasjonstilstander
2, 4, 5, 6
Bruksområder
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
Isotoper
Stabile isotoper
192Pt, 194Pt, 195Pt, 196Pt, 198PtUstabile isotoper
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