Video: Dab tsi yog suav tias yog ib pawg electron?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Ib pawg electron tuaj yeem yog hluav taws xob khub, ib leeg ib khub, a ib leeg tsis ua khub hluav taws xob , ob daim ntawv cog lus lossis triple daim ntawv cog lus ntawm qhov nruab nrab atom. Siv VSEPR txoj kev xav, lub hluav taws xob daim ntawv cog lus khub thiab ib leeg khub ntawm qhov nruab nrab atom yuav pab peb kwv yees cov duab ntawm lub molecule.
Kuj paub, qhov txawv ntawm pawg electron thiab pawg sib txuas yog dab tsi?
Cov rog rog ntawm kev sib raug zoo thiab tsis- bonding electrons txiav txim siab peb-dimensional geometry ntawm " pab pawg ”ntawm electrons nyob ib ncig ntawm lub hauv paus atom. A " pab pawg ”ntawm electrons tuaj yeem yog ib leeg daim ntawv cog lus , ob daim ntawv cog lus , peb daim ntawv cog lus , los yog ib khub ntawm electrons.
Qhov thib ob, yog ch2o trigonal planar? Tsis muaj ib tug khub, yog li qhov no kuj yog cov molecular geometry. (b) CH 2 O Muaj 4 valence electrons hauv carbon, 1 txhua hauv hydrogen thiab 6 hauv oxygen, yog li muaj 12 electrons tag nrho. Cov e.d. geometry yog trigonal txoj kev , thiab vim tias tsis muaj ib leeg khub, lub molecular geometry kuj yog trigonal txoj kev.
Hauv qhov no, pawg electron kev npaj ntawm ch4 yog dab tsi?
Piv txwv li; plaub hluav taws xob khub yog faib nyob rau hauv ib tug tetrahedral duab. Yog hais tias cov no yog tag nrho cov kev sib raug zoo ua ke lub molecular geometry yog tetrahedral (piv txwv li. CH 4 ). Yog muaj ib khub niam txiv electrons thiab peb daim ntawv cog lus ua ke qhov txiaj ntsig molecular geometry yog trigonal pyramidal (piv txwv li NH3).
Muaj pes tsawg electron pawg?
Cov plaub pawg electron yog 2 ib daim ntawv cog lus rau Hydrogen thiab 2 ib leeg ntawm Oxygen. Txij li dej muaj ob leeg ib leeg nws cov duab molecular yog khoov. Raws li VSEPR txoj kev xav, cov hluav taws xob xav kom txo qis qis, yog li ntawd, cov khub ib leeg nyob ib sab ntawm ib leeg.
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