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Chemistry, 31.10.2021 01:10 codycollier
Hai nguyên tố A và B thuộc hai nhóm liên tiếp và ở hai chu kỳ liên tiếp của bảng tuần hoàn. Tổng số hạt mang điện tích trong 2 nguyên tử A và B bằng 50. Hợp chất giữa A và B phải điều chế gián tiếp a. A, B có thể là nguyên tố nào?
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Hai nguyên tố A và B thuộc hai nhóm liên tiếp và ở hai chu kỳ liên tiếp của bảng tuần hoàn. Tổng số...
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