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cho biet trong cac nguyen tu cua cac nguyen to, cac electron co muc nang luong cao nhat duoc xep vao cac phan lop de co cau hinh la :$2s^{2};2p^{3};3p^{1};3d^{1};3p^{5};4s^{1};4s^{2};4p^{5};4p^{6}$ .Cho biet nguyen to nao la kim loai, khi hiem,phi kim ?Cho biet vi tri trong bang tuan hoan cua cac nguyen to do ?
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