Txhua lub atoms sab nraud yog tib yam - tib lub dipoles, thiab lub sijhawm dipole nyob rau hauv tib txoj kev - mus rau carbon atom, tag nrho cov molecule yuav tsis-polar. Yog li ntawd, methane muaj cov ntawv cog lus tsis-polar, thiab tsis yog-polar tag nrho.
Puas yog CH4 daim ntawv cog lus polar?
Yog li, yog CH4 polar lossis nonpolar? CH4 yog ib qho tsis muaj polar molecule vim nws muaj symmetric tetrahedral geometrical duab nrog plaub zoo tib yam C-H daim ntawv cog lus. Lub electronegativity ntawm carbon thiab hydrogen yog 2.55 thiab 2.2, feem, uas ua rau cov nqi ib nrab yuav luag zero.
Puas yog CH4 puas muaj daim ntawv cog lus sib cog lus?
Methane (CH4) yog tsis-polarhydrocarbon compound tsim tawm ntawm ib qho carbon atom thiab 4 hydrogen atoms. Methane tsis yog-polar vim qhov sib txawv ntawm electronegativities ntawm carbon thiab hydrogen tsis zoo txaus los tsim cov tshuaj polarized.
Yuav ua li cas daim ntawv cog lus yog CH4?
Methane, CH4, yog covalent compound nrog raws nraim 5 atoms uas txuas los ntawm covalent bonds. Peb kos qhov kev sib raug zoo no raws li Lewis qauv (saib daim duab). Cov kab, los yog sticks, raws li peb hais, sawv cev rau covalent bonds. Muaj plaub daim ntawv cog lus los ntawm lub hauv paus carbon (C) txuas lossis txuas rau plaub lub atom hydrogen (H).
Puas methane muaj polar lossis nonpolar bonds?
Polar and Non-Polar Molecules
Raws li peb tau pom, C-H bonds hauv methane yog polar. Txawm li cas los xij, ib qho molecule ntawm methaneyog non-polar. Tshwj xeeb, lub sijhawm dipole ntawm methane yog xoom. Lub sijhawm dipole ntawm xoom txhais tau hais tias "qhov nruab nrab ntawm qhov tsis zoo" hauv lub molecule sib raug rau "qhov chaw ntawm qhov zoo".
