1,Tổng số hạt cơ bản của phân tử MClO3 là 182 ,trong đó tổng số hạt mang điện hơn số hạt không mang điện là 58.Tìm M 2, Oxit B có công thức là X2O ,tổng số hạt cơ bản trong B là 92 trong số hạtmang điện nhìêu hơn số hạt không mang điện là 28.Tìm B

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