- Hóa học
- Phi kim, halogen
- Age 16+
-
level: 10-12
- Vietnamese
คำแนะนำของผู้เขียน
ôn tập về đơn chất halogen
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Đơn chất halogen-phần 1
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คำแนะนำของผู้เขียน
ôn tập về đơn chất halogen