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quang2312tp
2 năm trước
Xác định tên nguyên tố trong các trường hợp sau: a) Nguyên tố X có điện tích hạt nhân nguyên tử là : +1,2816.10-18C b) Nguyên tử Y có tổng số proton, notron,electron trong nguyên tử là 34 c)Nguyên tố Z tạo thành hai loại oxit là ZOX, ZOY lần lượt chứa 50% và 60% oxi về khối lượng trong các oxit
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