Dab tsi yog covalent daim ntawv cog lus rau dummies?
Dab tsi yog covalent daim ntawv cog lus rau dummies?

Video: Dab tsi yog covalent daim ntawv cog lus rau dummies?

Video: Dab tsi yog covalent daim ntawv cog lus rau dummies?
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Environmental Science Rau Dummies

Thaum ob lub atom koom ua ke hauv a covalent bond , lawv tsim ib lub molecule uas sib koom electrons. Tsis zoo li hauv ionic daim ntawv cog lus , tsis yog ib qho ntawm cov atoms hauv a covalent bond poob lossis nce ib qho hluav taws xob; Hloov chaw, ob lub atoms siv ib khub ntawm cov electrons sib koom.

Tsis tas li ntawd, covalent daim ntawv cog lus yooj yim yog dab tsi?

Covalent bonds yog tshuaj daim ntawv cog lus nruab nrab ntawm ob lub atoms uas tsis yog hlau. Ib qho piv txwv yog dej, qhov twg hydrogen (H) thiab oxygen (O) daim ntawv cog lus sib koom ua ke (H2O). Lub plhaub sab nrauv feem ntau muaj yim electrons, los yog ob qho ntawm hydrogen lossis helium. Covalent bonds yog tsim los ntawm atoms sib koom valence electrons.

Tom qab ntawd, lo lus nug yog, dab tsi yog daim ntawv cog lus ionic rau dummies? Environmental Science Rau Dummies Txhawm rau tsim cov molecules, atoms yuav tsum pauv lossis faib cov electrons los ntawm lawv lub plhaub sab nraud los tsim cov atomic daim ntawv cog lus . Ib ionic daim ntawv cog lus tshwm sim thaum ib lub atom muab ib qho hluav taws xob rau lwm lub atom. Atoms txuas ua ke hauv txoj kev no hu ua ionic tshuaj sib xyaw.

Tsuas yog li ntawd, koj yuav piav qhia txog daim ntawv cog lus li cas?

A covalent bond , kuj hu ua molecular daim ntawv cog lus , yog tshuaj daim ntawv cog lus uas koom nrog kev sib koom ntawm electron khub ntawm atoms. Cov khub electron no hu ua cov khub sib koom lossis kev sib raug zoo khub, thiab qhov sib npaug ruaj khov ntawm kev txaus siab thiab kev tsis txaus siab ntawm cov atoms, thaum lawv sib koom electrons, yog hu ua covalent bonding.

Covalent daim ntawv cog lus yog dab tsi thiab muab piv txwv?

Piv txwv ntawm cov tebchaw uas tsuas muaj covalent bonds yog methane (CH4), carbon monoxide (CO), thiab iodine monobromide (IBr). Covalent bonding nruab nrab ntawm hydrogen atoms: Txij li txhua lub atom hydrogen muaj ib lub tshuab hluav taws xob, lawv muaj peev xwm sau lawv cov plhaub sab nraud los ntawm kev sib koom ib khub ntawm electrons los ntawm ib qho covalent bond.

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