<classify> Yinto ekhona eyinkimbinkimbi ehlanganisa, ngokwesifanekiso sikaBohr esenziwe saba lula, i-nucleus emaphakathi ezungezwa ama-electron, okufana ngandlelathile nokuzungeza kwamapulanethi ilunga - bona Umfanekiso 1.1.  <topic>: sciencetechnology 