Polonium
84
Po
Gruppe
16
Periode
6
Blok
p
Protoner
Elektroner
Neutroner
84
84
126
Generelle Egenskaber
Atomnummer
84
Atommasse
[210]
Masseantal
210
Kategori
Halvmetaller
Farve
Sølv
Radioaktiv
Ja
Named after Poland, native country of Madam Curie
Krystalstruktur
Simpel Kubisk
Historie
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.
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.
Elektroner i hver skal
2, 8, 18, 32, 18, 6
Elektronkonfiguration
[Xe] 4f14 5d10 6s2 6p4
Polonium is obtained by irradiating bismuth with high-energy neutrons or protons
Fysiske Egenskaber
Tilstandsform
Fast stof
Massefylde
9,196 g/cm3
Smeltepunkt
527,15 K | 254 °C | 489,2 °F
Kogepunkt
1235,15 K | 962 °C | 1763,6 °F
Smeltevarme
13 kJ/mol
Fordampningsvarme
100 kJ/mol
Varmefylde
-
Forekomst i jordskorpen
n/a
Forekomst i universet
n/a
CAS-nummer
7440-08-6
PubChem CID-nummer
n/a
Atomare egenskaber
Atomradius
168 pm
Kovalent radius
140 pm
Elektronegativitet
2,00 (Paulings skala)
Ioniseringspotentiale
8,417 eV
Atomvolumen
22,23 cm3/mol
Varmeledningsevne
0,2 W/cm·K
Oxidationstrin
-2, 2, 4, 6
Anvendelser
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 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
Isotoper
Stabile isotoper
-Ustabile isotoper
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