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Title: iodine crystals
Caption: Iodine crystals. Iodine (chemical symbol I2) is a nonmetallic element of the halogen group, which also includes chlorine and fluorine. It is a solid at room temperature, but readily forms a violet vapor. Passing from a solid to a gas without a liquid phase is known as sublimation.
Credit: Album / Science Source / CHARLES D. WINTERS
Image size: 2742 × 2836 px | 22.2 MB
Print size: 23.2 × 24.0 cm | 1079.5 × 1116.5 in (300 dpi)