Po
Polonium
Chikamu 84 · 208.98243 u
Post- Transition Metal
p- block
Chikamu 6
_Group 16
_Kukanganisa: at RT
Radioactive
t½ 125.2 years
Wikipedia →
Polonium inonziwo radioactive element, uye inozivikanwa sezvakaitika neCuries.
Maitiro ekushandisa
| Atomic radius: | 208.98243 u |
| Kuomarara | 9.32 g/cm³ |
| Kutonhora Point | 527.0 K |
| Kutonhora Point | 1235.0 K |
| Kuoneka | Silvery metallic |
| State at Room Temp | _Kukanganisa: |
Chemical zvinhu
| Electronegativity | 2.0 (Pauling) |
| 1st Ionization Energy | 812.1 kJ/mol |
| Electronegativity: | 183.3 kJ/mol |
| Oxygen | -2, +2, +4, +6 |
Atomic Properties
| Kuisa Kugadzirisa | [Xe] 4f14 5d10 6s2 6p4 |
| Atomic radius: | 168.0 pm |
| Covalent Radius | 140.0 pm |
| Van der Waals radius | 197.0 pm |
Discovery
| Yakawanikwa ne | Marie Curie, Pierre Curie |
| Kuonekwa kwegore | 1898 |
| _Panzvimbo: | Paris, France |
| Akapihwa zita mushure me | Inozivikanwa nezita rekuti Poland, nyika yababa vaMarie Curie |
Nezve Polonium
Polonium i radioactive zvinhu, asi hapana isotopes vakachengeteka. Polonium-210 inogadzira kupisa kunoshamisa kubva alpha radiation, uye inokonzera kuora mwoyo kana ichidya.
Mashandisiro & Maapplication
Static eliminators, neutron zviwanikwa, tembiricha zviwanikwa zvepasi satellites, uye nuclear triggers.
Nhoroondo yemitambo
Polonium-210 yakashandiswa kuuraya mutsva weRussia Alexander Litvinenko muLondon muna 2006.
Isotopes
| Mamwe marudzi ezvinyorwa | Kuwanda | Half-Life | _Kuchengeta |
| 208 | - | 2.898 years | Hapana |
| 209 | - | 125.2 years | Hapana |
| 210 | - | 138.376 days | Hapana |
Kuisa Kugadzirisa
[Xe] 4f14 5d10 6s2 6p4