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Hnckpp23
2 năm trước
Bài 13. Tổng số proton, nơtron, electron trong nguyên tử của nguyên tố Y là 22. Trong hạt nhân có tổng số hạt là 15. Hãy xác định thành phần cấu tạo nguyên tử, gọi tên và viết kí hiệu nguyên tố X. Giúp mk vớiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii
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