... hieu Dap an C nguyen tir la 12 , 17 , 1, 26, 24, 9, 7, 15 So nguyen tir la kim loai la A 12 , 17 , 1. 26,24 B 17 , 1, 9,7, 15 C .12 , 26, 24, D 12 , 26,24, 7, 15 Bai tap ve nha: 1, 2, 3, 4, 5, 6, 7, 8, (SGK) ... dien bang nanomet, nm): lap ngodi cung (1- 3 electron) Hogt dgng cua GV llNa i2Mg 13 AI u S i ]5P Hogt dgng cda HS 16 S 17 CI 0 .15 7 0 ,13 6 0 ,12 5 0 ,11 7 0 ,11 0 0 ,10 4 0,099 Yeu cau HS riit nhan xet ve ... khoi lugng cua AI, Fe, Cu hgp kim A 21, 1%; 59,2%; 19 ,7% B 52,94%; 21, 1%; 25,96% C 25,96%; 21, 1%; 52,94% D 25,96%; 52,94%; 21, 1% Bai tap ve nha: 1, 2, 3, 4, (SGK) D HU'ONG DAN GIAI BAI TAP TRONG...