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Câu 18: [VNA] Ở điều kiện thường, iot là chất rắn dạng tinh thể màu đen tím. Khi đun nóng, iot có sự thăng hoa. Vậy sự thăng hoa của iot là sự chuyển trạng thái từ thể A. rắn sang khí. B. rắn sang lỏng. C. lỏng sang rắn. D. khí sang rắn.
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