Yog vim li cas rau qhov zoo hluav taws xob conductivity yog vim cov qauv ntawm graphite Qhov tseeb, txhua cov pa roj carbon atom yog sib koom ua ke rau hauv nws cov txheej txheem nrog peb lub zog covalent bonds; Qhov no tawm hauv txhua lub atom nrog ib qho khoom siv hluav taws xob, uas ua ke tsim lub hiav txwv delocalized ntawm electrons loosely bonding cov txheej ua ke.
Vim li cas graphite yog ib qho hluav taws xob zoo?
Nyob rau hauv ib lub graphite molecule, ib valence electron ntawm txhua cov pa roj carbon atom tseem dawb, Yog li ua graphite ib tug zoo conductor ntawm hluav taws xob. Whereas hauv pob zeb diamond, lawv tsis muaj hluav taws xob mobile dawb. Li no yuav tsis muaj ntws ntawm electrons Yog vim li cas tom qab pob zeb diamond yog tsis zoo conductor hluav taws xob.
Vim li cas graphite conductive thiab tsis pob zeb diamond?
Graphite tuaj yeem ua hluav taws xob vim cov delocalised (dawb) electrons hauv nws cov qauvCov no tshwm sim vim tias txhua cov pa roj carbon atom tsuas yog sib txuas rau 3 lwm cov pa roj carbon atoms. … Txawm li cas los xij, hauv pob zeb diamond, tag nrho 4 txheej electrons ntawm txhua cov pa roj carbon atom yog siv rau hauv covalent bonding, yog li tsis muaj delocalised electrons.
Vim li cas graphite tsuas ua tau hluav taws xob?
Cov hluav taws xob siab ntawm graphene yog vim xoom-overlap semimetal nrog electron thiab qhov raws li tus nqi nqa khoom..
Vim li cas graphite ua hluav taws xob txawm tias nws tsis yog hlau?
Nyob rau hauv graphite txhua cov pa roj carbon monoxide yog sib koom ua ke rau peb lwm cov pa roj carbon atom yog li tawm hauv qab ib qho hluav taws xob dawb. Vim lub xub ntiag ntawm no ib tug delocalised electron, graphite yog ib tug zoo conductor ntawm hluav taws xob. Txawm li cas los xij, graphite yog tib yam tsis yog hlau uas tuaj yeem ua hluav taws xob.
