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hongtham.210104
2 năm trước
Trong nguyên tử của nguyên tố M có tổng số hạt p,n,e là 58. Biết số hạt proton ít hơn số hạt nơtron là 1 hạt. Số hiệu nguyên tử của M là Giúp mk vs ạ mình đang cần gấp cảm oen mn
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