Polonium
84
Po
Groep
16
Periode
6
Blok
p
Protonen
Elektronen
Neutronen
84
84
126
Algemene Eigenschappen
Atoomnummer
84
Atomair gewicht
[210]
Massa Getal
210
Categorie
Metalloïden
Kleur
Zilver
Radioactief
Ja
Named after Poland, native country of Madam Curie
Kristalstructuur
Eenvoudige Kubus
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.
Eletronen per schil
2, 8, 18, 32, 18, 6
Electronconfiguratie
[Xe] 4f14 5d10 6s2 6p4
Polonium is obtained by irradiating bismuth with high-energy neutrons or protons
Fysieke Eigenschappen
Fase
Vast
Dichtheid
9,196 g/cm3
Smeltpunt
527,15 K | 254 °C | 489,2 °F
Kookpunt
1235,15 K | 962 °C | 1763,6 °F
Fusiewarmte
13 kJ/mol
Verdampingswarmte
100 kJ/mol
Specifieke Warmtecapaciteit
-
Overvloedig aanwezig in de aardkorst
n.v.t.
Overvloedig aanwezig in het universum
n.v.t.
CAS-nummer
7440-08-6
PubChem CID nummer
n.v.t.
Atoomeigenschappen
Atoomstraal
168 pm
Covalentiestraal
140 pm
Electronegativiteit
2,00 (Pauling schaal)
Ionisatiepotentiaal
8,417 eV
Atoomvolume
22,23 cm3/mol
Thermische geleiding
0,2 W/cm·K
Oxidatietoestanden
-2, 2, 4, 6
Toepassingen
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
Isotopen
Stabiele isotopen
-Instabiele isotopen
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