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Câu 97 Phân tử Na2NH có tên gọi là: A natri amino B Natri imidua C Natri amidua D Natri nitrua Câu 98 Hydro nguyên tử có thể phản ứng với KMnO4 trong môi trường axit H2SO4 loãng Tổng hệ số cân bằng của phản ứng (là các số nguyên nhỏ nhất) đó là: A 10 B 15 C 26 18 Câu 99 Oxy trong tự nhiên tồn tại mấy dạng thù hình A Một dạng duy nhất B Hai dạng C Ba dạng D Bốn dạng Câu