Polonium

84
Po
Grupp
16
Period
6
Block
p
Protoner
Elektroner
Neutroner
84
84
126
Generella Egenskaper
Atomnummer
84
Atommassa
[210]
Masstal
210
Kategori
Metalloid
Färg
Silver
Radioaktiv
Ja
Named after Poland, native country of Madam Curie
Kristallstruktur
Enkelt kubisk
Historia
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.
Elektroner per skal
2, 8, 18, 32, 18, 6
Elektronkonfiguration
[Xe] 4f14 5d10 6s2 6p4
Po
Polonium is obtained by irradiating bismuth with high-energy neutrons or protons
Fysikaliska Egenskaper
Aggregationstillstånd
Fast
Densitet
9,196 g/cm3
Smältpunkt
527,15 K | 254 °C | 489,2 °F
Kokpunkt
1235,15 K | 962 °C | 1763,6 °F
Smältvärme
13 kJ/mol
Ångbildningsvärme
100 kJ/mol
Specifik värmekapacitet
-
Abundance in Earth's crust
n/a
Abundance in Universe
n/a
Pierre
Bildkrediter: hp.ujf.cas.cz
Pierre and Marie Curie in the laboratory
CAS Number
7440-08-6
PubChem CID Number
n/a
Atomära Egenskaper
Atomradie
168 pm
Kovalent radie
140 pm
Elektronegativitet
2,00 (Paulingskalan)
Jonisationspotential
8,417 eV
Molvolym
22,23 cm3/mol
Värmeledningsförmåga
0,2 W/cm·K
Oxidationstillstånd
-2, 2, 4, 6
Användningsområden
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
Isotoper
Stabila isotoper
-
Instabila 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