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daydream3r
2 năm trước
Câu 2: A. Lập công thức hoá học của hợp chất hai nguyên tố : P(V) và O B. Lập công thức hoá học của hợp chất tạo bởi một nguyên tố và nhóm nguyên tử: Ca(II) và (NO3)(I)
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