phamduchuy387 phamduchuy387
  • 23-09-2021
  • Chemistry
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Nguyên tử của nguyên tố X có tổng số hạt 40. Tổng số hạt mang điện nhiều hơn số hạt không mang điện là 12 hạt.

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  • 23-09-2021
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