Vim li cas ho tsis muaj 2 daim ntawv cog lus?
Vim li cas ho tsis muaj 2 daim ntawv cog lus?

Video: Vim li cas ho tsis muaj 2 daim ntawv cog lus?

Video: Vim li cas ho tsis muaj 2 daim ntawv cog lus?
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Anonim

ob N = O ob daim ntawv cog lus thiab tsis muaj hluav taws xob tsis sib xws, yog li kev tawm tsam ntawm ob thaj tsam ntawm electron ceev yog txo los ntawm 180 ° daim ntawv cog lus lub kaum sab xis, thiab nws yog linear, zoo li nrog CO2. ib tug ntau dua repulsion tshaj ib tug electron nyob rau hauv TSIS MUAJ 2 , yog li lub kaum sab xis O-N-O txo ntxiv, mus rau 115.4 °.

Tsuas yog li ntawd, nitrogen puas tuaj yeem muaj 2 ob daim ntawv cog lus?

Chemistry ntawm nitrogen yog dominated los ntawm qhov yooj yim nrog uas nitrogen atom daim ntawv ob npaug thiab triple daim ntawv cog lus . Ib qho nruab nrab nitrogen atom muaj tsib valence electrons: 2s 2 2 ib p3. A nitrogen atom ua tau Yog li ntawd ua tiav ib qho octet ntawm valence electrons los ntawm kev sib koom peb khub ntawm electrons nrog lwm tus nitrogen atom. ob daim ntawv cog lus.

Tsis tas li ntawd, tsis muaj 2 qhov kev sib koom tes? NO2 tuaj ntawm HNO2 uas yog los ntawm O muaj ib-v fee. tab sis nyob rau hauv no molecule tsis muaj O nrog kev sib cog lus.

Ib yam li ntawd, tej zaum koj yuav nug, daim ntawv cog lus yog dab tsi rau no2?

Hauv nitrite ion, TSIS MUAJ 2 -, muaj ob qhov sib npaug resonance qauv. Txhua N-O daim ntawv cog lus hauv TSIS MUAJ 2 - yog 1.5. Ib yam li hauv nitrate ion, NO3-, muaj peb qhov sib npaug resonance qauv. yog, 1.5 thiab 1.

Puas yog no2 linear lossis khoov?

TSIS MUAJ 2 yog a khoov molecule; Txawm li cas los xij, thaum koj tshem tawm ib qho hluav taws xob los ntawm nws, ua rau nws NO2 +, lub molecule yuav ua kab tawm vim poob ntawm ib leeg electron. Ntawm qhov tod tes, nitrogen dioxide, TSIS MUAJ 2 , yog hom AX2E, thiab nws muaj lub kaum sab xis ntawm 134 degrees. Qhov ntxiv ib khub ntawm SF2 molecule ua rau lub kaum sab xis me dua.

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