Video: Selenium puas yog atom nruab nrab?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Selenium : khoom pub dawb atoms . Selenium atoms muaj 34 electrons thiab lub plhaub qauv yog 2.8. 18.6 ib. Hauv av xeev electron configuration ntawm hauv av xeev gaseous nruab nrab selenium yog [Ar].
Yog li ntawd, selenium yog dab tsi?
Nws yuav yooj yim dua rau lub caij kom ruaj khov los ntawm kev lees txais 2 electrons es tsis pub 6 ntawm nws cov electrons. Qhov no qhia tias cov nqi ntawm selenium ion yuav tsum yog −2 kom tau txais ib daim ntawv cog lus ionic. Yog li ntawd, lub nqi ntawm ion selenium Cov ntaub ntawv nyob rau hauv ib qho ionic compound yog −2.
Ib yam li ntawd, theem ib txwm ntawm selenium yog dab tsi?
| Lub npe | Selenium |
|---|---|
| Qhov ntom | 4,79 g ib xm |
| Theem ib txwm | Khoom |
| Tsev neeg | Nonmetals |
| Lub sijhawm | 4 |
Ib yam li ntawd, muaj pes tsawg valence electrons nyob rau hauv ib qho nruab nrab atom ntawm selenium?
Tsev neeg no muaj rau electrons nyob rau hauv lub plhaub sab nraud. Selenium tshwj xeeb muaj kev teeb tsa hluav taws xob ntawm 2-8-18-6. Cov rau electrons nyob rau hauv lub plhaub sab nraud tso cai rau selenium kom muaj ntau yam valence naj npawb.
Cov xim ntawm selenium yog dab tsi?
Selenium muaj nyob rau hauv ntau hom allotropic. Daim ntawv ruaj khov tshaj plaws, crystalline hexagonal selenium, yog nws yog xim hlau grey . Crystalline monoclinic selenium yog qhov tob liab xim. Amorphous selenium yog liab nyob rau hauv hmoov daim ntawv thiab yog dub nyob rau hauv vitreous daim ntawv.
Pom zoo:
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