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linhtinh1403
2 năm trước
Dãy nào gồm các phi kim được sắp xếp theo mức độ hoạt động hóa học giảm dần? A: S, N2 , Cl2 B: Br2 , Cl2 , O2 C: C, Br2 , Cl2 D: F2 , Cl2 , N2
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