Video: Cov kev cai ntawm covalent bonding yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Hauv ib covalent bond , cov electrons ntawm ob lub atoms sib koom thiab muaj nyob rau hauv qhov chaw nruab nrab ntawm ob lub nuclei. Cov hluav taws xob tsis zoo raug cuam tshuam rau ob lub nuclei, sib npaug lossis sib npaug. Kev sib faib tsis sib npaug ntawm cov hluav taws xob ntawm cov atoms yog hu ua polar covalent bond.
Ib yam li ntawd ib tug yuav nug, ua li cas cov ntawv cog lus ua haujlwm?
Covalent bonding tshwm sim thaum khub ntawm electrons sib koom los ntawm atoms. Atoms yuav covalently daim ntawv cog lus nrog rau lwm cov atoms nyob rau hauv thiaj li yuav tau txais ntau stability, uas yog tau los ntawm kev tsim ib tug tag nrho electron plhaub. Los ntawm kev sib koom lawv sab nrauv feem ntau (valence) electrons, atoms tuaj yeem sau lawv lub plhaub hluav taws xob sab nraud thiab tau txais kev ruaj ntseg.
Tsis tas li ntawd, koj ua li cas xam covalent bonds? Tus naj npawb ntawm daim ntawv cog lus rau ib tug nruab nrab atom yog sib npaug rau cov xov tooj ntawm electrons nyob rau hauv tag nrho valence plhaub (2 los yog 8 electrons) rho tawm tus naj npawb ntawm valence electrons. Txoj kev no ua haujlwm vim txhua tus covalent bond tias cov ntawv atom ntxiv lwm cov hluav taws xob rau lub atoms valence plhaub yam tsis hloov nws cov nqi.
Hauv qhov no, daim ntawv cog lus yog dab tsi thiab muab piv txwv?
Piv txwv ntawm Covalent Bond : 1. Dej. Ib piv txwv yog dej. Cov dej muaj ib covalent bond muaj hydrogen thiab oxygen kev sib raug zoo ua ke ua H2O. Nyob rau hauv no atomic molecule, ob hydrogen atoms qhia lawv ib tug electrons nrog cov pa atom, uas qhia nws tus kheej ob electrons rov qab.
Txoj cai octet yog dab tsi thiab nws siv li cas hauv covalent bonding?
- Octet txoj cai hais tias atoms poob, nce, lossis faib cov electrons kom ua tiav qhov kev teeb tsa ruaj khov ntawm 8 valence electrons ( octet ua ). Nws yog siv nyob rau hauv covalent bonding thaum lub atom qhia electrons kom tiav octet ua.
Pom zoo:
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