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Chemistry, 29.11.2021 14:00 mettababeeeee

Nguyên tử X có rỗng số e trên các phân lớp là 5 . Số hiệu nguyên tử của X là

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Nguyên tử X có rỗng số e trên các phân lớp là 5 . Số hiệu nguyên tử của X là...

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