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Thanhkookie
2 năm trước
Nguyên tử Các bon có 6 hạt electron (giả sử điện tích của mỗi hạt electron là (-1) thì hạt nhân của nguyên tử Các bon sẽ mang điện tích là bao nhiêu?
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Đặt câu để phân biệt các từ đồng âm sau: a) cổ: ............................................................................................................................................ ............................................................................................................................................ b) thơm: ............................................................................................................................................ ............................................................................................................................................ c) bê: ........................................................................................................................................... ….......................................................................................................................................

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