Bond covalent Nonpolar - bond kiimikada sameeyey by the atamka isla

bond covalent Nonpolar loola jeedaa fudud bonds kiimikada. Waxaa la aasaasay by lammaanaha electron caadi ah. Waxaa jira 2 nooc oo ah ururo covalent yihiin hab formation kala duwan. Ka fiirso iyada waxbarashada iyo ka badan oo ku saabsan waxa uu yahay inta badan ee a bond aan kala horjeeda bartaan. Waxaa inta badan laga sameeyey walxaha fudud - nonmetals, si kastaba ha ahaatee, ku dhici kara xeryahooda sameeyay by atamka kala duwan, iyadoo proviso in qiimaha electronegativity of walxaha loo siman yahay. Tusaale ahaan, PH3 EO walax (P) = EA (H) = 2.2.

Ka fiirso, sida dhigaalka covalent aan kala horjeeda waxaa la aasaasay. In la eb hydrogen ka mid electron oo keliya, si qolof electron ma dhamaato, waxaa ka maqan xataa 1. dhexgalka ee atamka hydrogen bilaabaan inay midba midka kale u dhowaan sabab u ah ciidamada of jiidashada of nuclei iyo electrons, halka daruuraha electron qayb noqnoqashada. Inta lagu guda jiro doublet this waxaa la aasaasay, taas oo iska leh laba Qurub hoose. In meel daruuraha electron ah midba midka kale u dabooleen, waxaa jira ah cufnaanta electron kordhay, soo jiidata ah nuclei qaaradda, oon la siinayo Britain ayaa ah xarunta adag. Covalent nonpolar bond schematically qoran sida soo socota:

· + H · H - H: H ama H - N.

Halkan, electron ku unpaired of lakabka dibadda waxaa muujinaysaa by hal dhibic, iyo wadarta labada ciyaaryahan electron laba dhibcaha -: ama dumisaan.

Laga soo bilaabo kor ku xusan waxaa lagu arki karaa in aagga of xirmi daruuraha electron symmetrically si ixtiraam leh in ay laba atamka ku yaal. In hab la mid ah si ay u sameeyaan bond a non-kala horjeeda covalent in kiiska ee u taagoo fudud, walxaha isagoo tiro badan oo electrons.

Tan iyo markii xiriirka ay tani tahay caadiga ah ee ugu-Biraha aan, aad dhigay karaa qaab, oo la xiriira in ay jirka guryaha. Muqaadaraadka la urur covalent apolar noqon karaa adke (Silicon, baaruud), gaasas (hydrogen iyo oxygen) iyo dareeraha (bromo oo kaliya). Haddii aad eegto si dhow ula at ma ku kelli ssy gaseous iyo dareere non-birta ah, waxaa la arkay in la sii kordhaya Mr inta badan waxay kordhisaa xaabo iyo heerkulka kulul. Iyada oo nonmetals adag sida aanu ka dhacaan ma. Waxa ugu waa in walxaha fudud leeyihiin qaab-dhismeedka qaaradda-crystalline oo imparts xoog bond covalent nonpolar. Sayidka, weyn ee tirada la xidhiidha sida, ku adag tahay xarunta, tusaale ahaan, diamond iyo graphite.

Ururka Nonpolar muhiim ah in geeddi socodka nolosha noolaha ah, sida waa xoog badan oo ka xasilloon, iyo ra'iyi hydrogen. In si ay u jebiyaan xiriirka sida, xayawaanka ama geedka lagama maarmaan ah in arsaaqa xaddi badan oo tamarta, sidaas hab ay of burburinta ensaymes qaadashada qayb firfircoon.

bond covalent Nonpolar - dhigaalka sameeyey by the atamka isla ama kala duwan oo qayb ka hoose ee xarunta adag isagoo qiimaha siman electronegativity. Sayidka siman qaban atamka labada electron caadi ah (doublet).