Video: Dab tsi yog Valency ntawm alkali hlau?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Alkaline ntiaj teb hlau belongs rau 2nd pab pawg neeg niaj hnub periodic rooj. Lawv muaj 2 electrons nyob rau sab nraud valence plhaub. Raws li nws yooj yim rau lawv poob 2 electrons dua li nce 6 ntau electrons kom ua tiav octet, lawv poob electrons thiab tau txais tus nqi ntawm +2.
Raws li, dab tsi yog qhov valence ntawm alkali hlau?
Tus naj npawb ntawm valence electrons
| Pab pawg neeg lub sijhawm | Valence electrons |
|---|---|
| Pawg 1 (I) (alkali hlau) | 1 |
| Pawg 2 (II) (alkaline ntiaj teb hlau) | 2 |
| Pawg 3-12 (kev hloov pauv hlau) | 3–12 |
| Pawg 13 (III) (Boron pawg) | 3 |
Ib sab saum toj no, puas alkali hlau muaj valence electrons? Cov ntsiab lus hauv Pawg 1 ( lithium poov tshuaj, sodium, rubidium , cesium, thiab francium ) yog hu ua alkali hlau . Tag nrho cov alkali hlau muaj ib o s hluav taws xob nyob rau hauv lawv cov sab nraud lub ntsiab lus tseem ceeb. Nco qab tias zoo li ntawd electrons yog hu ua valence electrons.
Tsuas yog li ntawd, yog vim li cas Valency ntawm alkali hlau ib txwm 1?
Muaj xwb ib valence electron ua alkali hlau tsis ruaj tsis khov, yog li thaum lawv nkag mus rau hauv kev sib cuag nrog lub ntsiab lus uas xav tau qee cov electrons, nws tso nws ib electron thiab ua ib tug cation, los yog ib tug zoo charged atom. Yog li, txij li alkali hlau poob ib electron, lawv muaj ib tug + 1 nqi.
Vim li cas cov hlau alkali hu ua li ntawd?
Cov alkali hlau yog yog li ntawd npe vim thaum lawv hnov mob nrog dej lawv tsim alkalies. Alkalies yog hydroxide compounds ntawm no cov ntsiab lus , xws li sodium hydroxide thiab potassium hydroxide. Alkalies react nrog acids los ua ntsev.
Pom zoo:
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