Platina
78
Pt
Groep
10
Periode
6
Blok
d
Protonen
Elektronen
Neutronen
78
78
117
Algemene Eigenschappen
Atoomnummer
78
Atomair gewicht
195,084
Massa Getal
195
Categorie
Overgangsmetalen
Kleur
Grijs
Radioactief
Nee
From the Spanish word platina, meaning silver
Kristalstructuur
Zijvlak-gecentreerde Kubus
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.
Eletronen per schil
2, 8, 18, 32, 17, 1
Electronconfiguratie
[Xe] 4f14 5d9 6s1
Platinum exists in higher abundances on the Moon and in meteorites
Fysieke Eigenschappen
Fase
Vast
Dichtheid
21,45 g/cm3
Smeltpunt
2041,45 K | 1768,3 °C | 3214,94 °F
Kookpunt
4098,15 K | 3825 °C | 6917 °F
Fusiewarmte
20 kJ/mol
Verdampingswarmte
490 kJ/mol
Specifieke Warmtecapaciteit
0,133 J/g·K
Overvloedig aanwezig in de aardkorst
3,7×10-6%
Overvloedig aanwezig in het universum
5×10-7%
CAS-nummer
7440-06-4
PubChem CID nummer
23939
Atoomeigenschappen
Atoomstraal
139 pm
Covalentiestraal
136 pm
Electronegativiteit
2,28 (Pauling schaal)
Ionisatiepotentiaal
8,9587 eV
Atoomvolume
9,10 cm3/mol
Thermische geleiding
0,716 W/cm·K
Oxidatietoestanden
2, 4, 5, 6
Toepassingen
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
Isotopen
Stabiele isotopen
192Pt, 194Pt, 195Pt, 196Pt, 198PtInstabiele isotopen
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