Conical flask containing iodine with gas
Numéro d’image : 11962100
| Iodine. Conical flask containing crystals and purple vapour of iodine. Iodine,chemical symbol I,is a violet-black,non-metallic element belonging to the halogen group of the periodic table. Iodine is present in seawater and was formerly extracted from seaweed; it is now obtained from oil-well brines. Iodine is required as a trace element by most living organisms. In mammals it is concentrated in the thyroid gland as a constituent of thyroid hormones. Tincture of iodine (iodine dissolved in ethanol) is used in medicine as a mild antiseptic. There are 14 radioactive isotopes of iodine,and one stable isotope (iodine-127) | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / Winters, Charles D. |
| Taille de l’image : | 3566 px × 5191 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : |
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