Platin

78
Pt
Gruppe
10
Periode
6
Blok
d
Protons
Electrons
Neutrons
78
78
117
General Properties
Atomnummer
78
Atommasse
195,084
Mass Number
195
Kategori
Overgangsmetaller
Farve
Grå
Radioactive
Nej
From the Spanish word platina, meaning silver
Krystalstruktur
Fladecentreret Kubisk
History
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.
Elektroner i hver skal
2, 8, 18, 32, 17, 1
Elektronkonfiguration
[Xe] 4f14 5d9 6s1
Pt
Platinum exists in higher abundances on the Moon and in meteorites
Physical Properties
Tilstandsform
Fast stof
Massefylde
21,45 g/cm3
Smeltepunkt
2041,45 K | 1768,3 °C | 3214,94 °F
Kogepunkt
4098,15 K | 3825 °C | 6917 °F
Smeltevarme
20 kJ/mol
Fordampningsvarme
490 kJ/mol
Varmefylde
0,133 J/g·K
Abundance in Earth's crust
3,7×10-6%
Abundance in Universe
5×10-7%
A
Billede akkrediteringer: Wikimedia Commons (Alchemist-hp)
A native platinum nugget
CAS Number
7440-06-4
PubChem CID Number
23939
Atomic Properties
Atomradius
139 pm
Kovalent radius
136 pm
Elektronegativitet
2,28 (Paulings skala)
Ionization Potential
8,9587 eV
Atomic Volume
9,10 cm3/mol
Varmeledningsevne
0,716 W/cm·K
Oxidationstrin
2, 4, 5, 6
Applications
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 considered to be non-toxic
Isotoper
Stable Isotopes
192Pt, 194Pt, 195Pt, 196Pt, 198Pt
Unstable Isotopes
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