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Rose2000
2 năm trước
1. Nguyên tử X có tổng số hạt là 60 hạt trong đó số hạt không mang điện bằng số hạt mang điện tích dương. Tìm Z, e, p, n, A 2. Nguyên tử y có tổng số hạt là 115. số hạt không mang điện ít hơn số hạt mang điện 25 hạt. tìm z, e, p, n, a HELP ME PLS, THANKS!
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