Poloni
84
Po
Grup
16
Període
6
Bloc
p
Protons
Electrons
Neutrons
84
84
126
Propietats Generals
Nombre atòmic
84
Massa atòmica
[210]
Nombre de massa
210
Categoria
Metal·loide
Color
Plata
Radioactiu
Sí
Named after Poland, native country of Madam Curie
Estructura cristal·lina
Cub simple
Història
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 capa
2, 8, 18, 32, 18, 6
Configuració electrònica
[Xe] 4f14 5d10 6s2 6p4
Polonium is obtained by irradiating bismuth with high-energy neutrons or protons
Propietats Físiques
Fase
Sòlid
Densitat
9,196 g/cm3
Punt de fusió
527,15 K | 254 °C | 489,2 °F
Punt d'ebullició
1235,15 K | 962 °C | 1763,6 °F
Entalpia de fusió
13 kJ/mol
Entalpia de vaporització
100 kJ/mol
Capacitat tèrmica específica
-
Abundància a l'escorça terrestre
n/a
Abundància a l'univers
n/a
Número CAS
7440-08-6
Número CID de PubChem
n/a
Propietats Atòmiques
Radi atòmic
168 pm
Radi covalent
140 pm
Electronegativitat
2,00 (Escala de Pauling)
Potencial d'ionització
8,417 eV
Volum atòmic
22,23 cm3/mol
Conductivitat tèrmica
0,2 W/cm·K
Estats d'oxidació
-2, 2, 4, 6
Aplicacions
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
Isòtops
Isòtops estables
-Isòtops inestables
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