Platina

78
Pt
Skupina
10
Perioda
6
Blok
d
Protons
Electrons
Neutrons
78
78
117
General Properties
Vrstno število
78
Atomska teža
195,084
Mass Number
195
Kategorija
Prehodne kovine
Barva
Gray
Radioactive
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.
Electrons per shell
2, 8, 18, 32, 17, 1
Razporeditev elektronov
[Xe] 4f14 5d9 6s1
Pt
Platinum exists in higher abundances on the Moon and in meteorites
Physical Properties
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
Abundance in Earth's crust
3,7×10-6%
Abundance in Universe
5×10-7%
A
Zasluge za slike: Wikimedia Commons (Alchemist-hp)
A native platinum nugget
CAS Number
7440-06-4
PubChem CID Number
23939
Atomic Properties
Atomski polmer
139 pm
Kovalentni polmer
136 pm
Elektronegativnost
2,28 (Paulingova lestvica)
Ionization Potential
8,9587 eV
Atomic Volume
9,10 cm3/mol
Toplotna prevodnost
0,716 W/cm·K
Oksidacijska stanja
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
Isotopes
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