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Selenium
Chikamu 34 · 78.971 u
Selenium icho chine simba kwazvo uye chinokosha mukugadzira zvinhu zvemagetsi.
Maitiro ekushandisa
| Atomic radius: | 78.971 u |
| Kuomarara | 4.809 g/cm³ |
| Kutonhora Point | 494.0 K |
| Kutonhora Point | 958.0 K |
| Kuoneka | Red kune gray, black mu vitreous form |
| State at Room Temp | _Kukanganisa: |
Chemical zvinhu
| Electronegativity | 2.55 (Pauling) |
| 1st Ionization Energy | 941.0 kJ/mol |
| Electronegativity: | 195.0 kJ/mol |
| Oxygen | -2, +2, +4, +6 |
Atomic Properties
| Kuisa Kugadzirisa | [Ar] 3d10 4s2 4p4 |
| Atomic radius: | 103.0 pm |
| Covalent Radius | 120.0 pm |
| Van der Waals radius | 190.0 pm |
Discovery
| Yakawanikwa ne | Jons Jacob Berzelius |
| Kuonekwa kwegore | 1817 |
| _Panzvimbo: | Stockholm, Sweden |
| Akapihwa zita mushure me | Chirungu'selenium' zvinoreva moon |
Nezve Selenium
Selenium ine zvinhu pakati pesulfur netellurium. Conductivity yayo ichange ichichinja nezuva, izvo zvinoita kuti zvive nyore muphotoconductors.Ini ndicho chikonzero nei selenium ichishandiswa zvakanyanya mukugadzira maphotoconductors.
Mashandisiro & Maapplication
Photovoltaic cells, photocopiers, girazi kugadzira, dietary zvipfuwo, uye semiconductors.
Nhoroondo yemitambo
Selenium inodiwa muzvishoma zvishoma asi zvinokuvadza muzvikuru dosi. Brazil nuts ndivo vakanaka kwazvo anozivikanwa kudya chikuva.
Isotopes
| Mamwe marudzi ezvinyorwa | Kuwanda | Half-Life | _Kuchengeta |
| 76 | 0.0937% | - | _Ndiani |
| 78 | 0.2377% | - | _Ndiani |
| 80 | 0.4961% | - | _Ndiani |
| 82 | 0.0873% | - | _Ndiani |
Kuisa Kugadzirisa
[Ar] 3d10 4s2 4p4