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Chemistry, 06.11.2020 01:00 emmaea831

Câu 10: Nguyên tử của nguyên tố X có electron ở mức năng lượng cao nhất là 3p. Nguyên tử của nguyên tố X cũng có chectron C mức năng lượng 3p và có hai electron ở lớp ngoài cùng. Nguyên tử X và Y có số electron hơn kém nhau là 2. Nguyên tố X, Y
lần lưOt là
A. kim loại và khí hiếm. B. phi kim và kim loại. C. Khí hiếm và kim loại, . D, kim loại và kim loại,
Nguyên tố N

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Câu 10: Nguyên tử của nguyên tố X có electron ở mức năng lượng cao nhất là 3p. Nguyên tử của nguyên...
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