CÂU 11 12 13 14 15 16 17 18 19 20ĐÁP ÁNCHO KLNT

9, - KIEM TRA CHUONG HALOGEN
KIEM TRA CHUONG HALOGEN

9, Cl = 35,5 , Br = 80, I = 127, Fe = 56, Mn = 55, Ag = 108, Al = 27, Zn = 65.