3N mire. Viing lai hoa ds cdn 3N miic trdng nen
kim loai chuyen tiep dandien tdt.Cac
kim loai dan nhiet tdt nhd kha nang di chuyen tu do ciia cac electronhoa tri
trong tinh the va truyen nang lugng tir phan ndng hon sang phan lanhhon. Khi dun ndng, dao ddng cua cac nguyen tir ta[r]