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tuyettrinh1099
2 năm trước
Trong tự nhiên Brom tồn tại chủ yếu dưới 2 đồng vị Br35 79 và Br35 81. Bt ngtu khối trung bình của Br là 79,9862. Phần trăm của đồng vị Br35 79 là A.50,69% B.50,68% C.50,96% D.50,86%
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