Платина

78
Pt
Група
10
Периода
6
блок
d
Protons
Electrons
Neutrons
78
78
117
Општи Својства
Атомски број
78
Атомска тежина
195,084
Mass Number
195
Category
Преоден метал
Color
Gray
Radioactive
Не
From the Spanish word platina, meaning silver
Кристална структура
Face Centered Cubic
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.
Electrons per shell
2, 8, 18, 32, 17, 1
Електронска конфигурација
[Xe] 4f14 5d9 6s1
Pt
Platinum exists in higher abundances on the Moon and in meteorites
Физички Својства
Фаза
Solid
Густина
21,45 g/cm3
Точка на топење
2041,45 K | 1768,3 °C | 3214,94 °F
Точка на вриење
4098,15 K | 3825 °C | 6917 °F
Топлина на топење
20 kJ/mol
Топлина на испарување
490 kJ/mol
Specific Heat Capacity
0,133 J/g·K
Abundance in Earth's crust
3,7×10-6%
Abundance in Universe
5×10-7%
A
Кредити на слика: Wikimedia Commons (Alchemist-hp)
A native platinum nugget
CAS Number
7440-06-4
PubChem CID Number
23939
Атомски Својства
Атомски полупречник
139 pm
Ковалентен полупречник
136 pm
Електронегативност
2,28 (Полингова скала)
Ionization Potential
8,9587 eV
Atomic Volume
9,10 cm3/mol
Thermal Conductivity
0,716 W/cm·K
Oxidation States
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