Полониум

84
Po
Група
16
Периода
6
блок
p
Protons
Electrons
Neutrons
84
84
126
Општи Својства
Атомски број
84
Атомска тежина
[210]
Mass Number
210
Category
Металоид
Color
Silver
Radioactive
Да
Named after Poland, native country of Madam Curie
Кристална структура
Simple Cubic
History
Polonium was discovered by Marie and Pierre Curie in 1898 in Paris.

This element was the first one discovered by the Curies while they were investigating the cause of pitchblende radioactivity.

The dangers of working with radioactive elements were not known when the Curies made their discoveries.
Electrons per shell
2, 8, 18, 32, 18, 6
Електронска конфигурација
[Xe] 4f14 5d10 6s2 6p4
Po
Polonium is obtained by irradiating bismuth with high-energy neutrons or protons
Физички Својства
Фаза
Solid
Густина
9,196 g/cm3
Точка на топење
527,15 K | 254 °C | 489,2 °F
Точка на вриење
1235,15 K | 962 °C | 1763,6 °F
Топлина на топење
13 kJ/mol
Топлина на испарување
100 kJ/mol
Specific Heat Capacity
-
Abundance in Earth's crust
Нема одговор
Abundance in Universe
Нема одговор
Pierre
Кредити на слика: hp.ujf.cas.cz
Pierre and Marie Curie in the laboratory
CAS Number
7440-08-6
PubChem CID Number
Нема одговор
Атомски Својства
Атомски полупречник
168 pm
Ковалентен полупречник
140 pm
Електронегативност
2,00 (Полингова скала)
Ionization Potential
8,417 eV
Atomic Volume
22,23 cm3/mol
Thermal Conductivity
0,2 W/cm·K
Oxidation States
-2, 2, 4, 6
Applications
Polonium is used to eliminate static electricity produced during processes such as rolling paper, wire and sheet metal.

Polonium can be mixed or alloyed with beryllium to provide a source of neutrons.

It is also used in anti-static brushes to eliminate dust on photographic film.
Polonium is highly dangerous and radioactive
Isotopes
Stable Isotopes
-
Unstable Isotopes
188Po, 189Po, 190Po, 191Po, 192Po, 193Po, 194Po, 195Po, 196Po, 197Po, 198Po, 199Po, 200Po, 201Po, 202Po, 203Po, 204Po, 205Po, 206Po, 207Po, 208Po, 209Po, 210Po, 211Po, 212Po, 213Po, 214Po, 215Po, 216Po, 217Po, 218Po, 219Po, 220Po