Polonij
84
Po
Skupina
16
Perioda
6
Blok
p
Protons
Electrons
Neutrons
84
84
126
General Properties
Vrstno število
84
Atomska teža
[210]
Mass Number
210
Kategorija
Polkovine
Barva
Silver
Radioactive
Da
Named after Poland, native country of Madam Curie
Kristalna struktura
Primitivna kubična
Zgodovina
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.
Electrons per shell
2, 8, 18, 32, 18, 6
Razporeditev elektronov
[Xe] 4f14 5d10 6s2 6p4
Polonium is obtained by irradiating bismuth with high-energy neutrons or protons
Physical Properties
Faza snovi
Trdnina
Gostota
9,196 g/cm3
Tališče
527,15 K | 254 °C | 489,2 °F
Vrelišče
1235,15 K | 962 °C | 1763,6 °F
Talilna toplota
13 kJ/mol
Izparilna toplota
100 kJ/mol
Toplotna kapaciteta
-
Abundance in Earth's crust
n/a
Abundance in Universe
n/a
CAS Number
7440-08-6
PubChem CID Number
n/a
Atomic Properties
Atomski polmer
168 pm
Kovalentni polmer
140 pm
Elektronegativnost
2,00 (Paulingova lestvica)
Ionization Potential
8,417 eV
Atomic Volume
22,23 cm3/mol
Toplotna prevodnost
0,2 W/cm·K
Oksidacijska stanja
-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 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