Video: Dab tsi yog qhov valence ntawm lub caij?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Valence yog txhais los ntawm IUPAC raws li: Qhov siab tshaj plaws ntawm cov atoms univalent (thaum chiv hydrogen los yog chlorine atoms) uas yuav ua ke nrog ib tug atom ntawm lub keeb nyob rau hauv kev txiav txim siab, los yog nrog ib feem, los yog rau qhov twg atom ntawm no keeb tuaj yeem hloov tau.
Tom qab ntawd, ib tug kuj yuav nug, dab tsi yog qhov valency ntawm lub ntsiab?
Valency yog lub peev xwm sib txuas ntawm ib qho keeb . Valency yog tus naj npawb ntawm electrons uas ib tug nruab nrab atom ntawm ib keeb poob lossis nce kom muaj cov roj hluav taws xob hluav taws xob zoo (kom ruaj khov). Valency ntawm Aluminium yog 3 vim nws tuaj yeem poob peb electrons. Ntawm qhov tod tes, Valency ntawm chlorine (atomic no.
Tsis tas li ntawd, valences ntawm 1st 30 ntsiab yog dab tsi?
- Hydrogen (H) Atomic Number -- 1. Valency -- 1.
- Helium (Nws) Atomic Number --2. Kev hlub - 0.
- Lithium (Le) Atomic Number -- 3. Valency -- 1.
- Beryllium (Be) Atomic Number -- 4. Valency -- 2.
- Boron (B) Atomic Number-- 5.
- Cov pa roj carbon (C) Atomic Number: 6.
- Nitrogen (N) Atomic Number --7.
- Oxygen (O) Atomic Number --8.
Qhov thib ob, Valency ntawm thawj 20 lub ntsiab yog dab tsi?
Lub Valency ntawm Thawj 20 Elements
| Element | Cim | Valency |
|---|---|---|
| Helium | Nws | 0 |
| Lithium | Li | 1 |
| Beryllium | Ua | 2 |
| Boron | B | 3 |
Puas yog Valency positive lossis negative?
Thiab thiab poob ntawm electron lossis nce ntawm electron hu ua charge of atom, Qhov zoo tus nqi yuav tau txais los ntawm pub dawb ntawm ib qho hluav taws xob thiab tsis zoo them los ntawm vice versa. Yog li valency tsis muaj kos npe, Charge muaj zoo thiab tsis zoo kos npe.
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