Atomic Number 53 (Noun)
Meaning
A nonmetallic element belonging to the halogens; used especially in medicine and photography and in dyes; occurs naturally only in combination in small quantities (as in sea water or rocks).
Classification
Nouns denoting substances.
Examples
- Atomic number 53, also known as iodine, is an essential nutrient for the human body found in small amounts in some foods.
- Iodine was used for a time as a photographic developer, but its dangers and the toxicity of its fumes have led to other substances being substituted for it.
- The pure iodine is isolated in the form of dark crystals only by the reaction of the iodide with chlorine.
- A deficiency of iodine, technically called iodopenia, causes hypothyroidism, with symptoms including severe fatigue, dry skin, and hair loss.
- Iodine can also eliminate bacteria, viruses, fungi, and protozoa, making it a good disinfectant.