Silver Iodide is ais a yellow, inorganic, photosensitive iodide of silver used in Photography, in medicine as an antiseptic, and in rainmaking for cloud seeding. It is very insoluble in water. It is made of 1 silver element and 1 iodine element.
Chemical Bonding:
It is a ionic bond.
Harmful effects:
Although silver iodide has many good uses like rainmaking, as antiseptic, it also has many harmful effects. Silver iodide is considered a hazardous substance, a priority pollutant, and a toxic pollutant. Chronic ingestion of iodides may produce “iodism”, which may be manifested by skin rash, running nose, headache, irritation of the mucous membranes, weakness, anemia, loss of weight and general depression. Chronic inhalation, ingestion or skin contact with silver compounds may cause argyria characterized by blue-gray discoloration of the eyes, skin and mucous membranes.
Constituent Elements:
Silver: Silver is a metallic chemical element with the chemical symbol Ag and atomic number 47. A soft, white, lustrous transition metal, it has the highest electrical conductivity of any element and the highest thermal conductivity of any metal. The metal occurs naturally in its pure, free form (native silver), as an alloy with gold and other metals, and in minerals such as argentite and chlorargyrite. Most silver is produced as a by-product of copper, gold, lead, and zinc refining.
Silver has long been valued as a precious metal, and it is used to make ornaments, jewelry, high-value tableware, utensils (hence the term silverware), and currency coins. Today, silver metal is also used in electrical contacts and conductors, in mirrors and in catalysis of chemical reactions. Its compounds are used in photographic film and dilute silver nitrate solutions and other silver compounds are used as disinfectants and microbiocides. While many medical antimicrobial uses of silver have been supplanted by antibiotics, further research into clinical potential continues.
Iodine: Iodine is a chemical element that has the symbol I and the atomic number 53.
Iodine and its compounds are primarily used in nutrition, the production of acetic acid and polymers. Iodine's relatively high atomic number, low toxicity, and ease of attachment to organic compounds have made it a part of many X-ray contrast materials in modern medicine.
Like the other halogens, iodine occurs mainly as a diatomic molecule I2, not the atom. In nature, iodine is a relatively rare element, ranking 47th in abundance. It is the heaviest essential element utilized in biological functions. Its rarity in many soils has led to many deficiency problems in land animals and inland human populations, with iodine deficiency affecting about two billion people and being the leading preventable cause of mental retardation. As a component of thyroid hormones, iodine is required by higher animals. Radioisotopes of iodine are concentrated in the thyroid gland. This property of thyroid-concentration, along with its mode of beta decay, makes iodine-131 one of the most carcinogenic nuclear fission products.
Formation: Silver: 2.8.18.18.1
Iodine: 2.8.18.18.7
Silver iodide is formed when silver gives 1 element on its outer shell to Iodine. So silver becomes 2.8.18.18 and iodine becomes 2.8.18.18.8
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