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Iodine is the heaviest member in a family of elements called halogens. It has an atomic number of 53, an atomic weight of 126.9045 and is denoted by the atomic symbol I. Although iodine is somewhat less reactive than other halogens, it does form...

Iodine is the fourth element in Group 17 of the periodic table, a group of elements known as the halogens. Iodine has an atomic number of 53, and atomic mass of 126.9045, and a chemical symbol of I. Iodine is a heavy, grayish black, metallic-looking...

Iodine Symbol I Atomic Number 53 Atomic Mass 126.9045 Family Group 17 (Viia) Halogen Pronunciation EYE-uh-dine Overview Iodine is the heaviest of the commonly occurring halogens. The halogens are in Group 17 (VIIA) of the periodic table. The periodic...

Iodine (IPA: /ˈaɪədaɪn, ˈaɪədɪn/, or /ˈaɪədiːn/; from Greek: iodes "violet"), is a chemical element that has the symbol I and atomic number 53. Iodine has 53 protons, 53 electrons, and 74 neutrons. Chemically, iodine is the least reactive of...

Iodine is a bluish-black, crystalline solid with submetallic luster, and has a specific gravity of 4.93. It volatilizes (sublimates) at ordinary temperatures into a blue-violet gas that has an irritating odor. Iodine is the least active of the halogens, all of which readily displace...

One morning in 1905, a bright young doctor was walking to Lakeside Hospital in Cleveland, Ohio. It was his first day on the job. Even though he was excited, he began to notice something strange. Many of the neighborhood dogs had big, swollen...

A federal appeals court tossed out a nearly $320,000 award to a thyroid cancer victim who blamed her disease on radiation from the government's Hanford nuclear installation, which made plutonium for bombs for four decades.A three-judge panel of the 9th U.S. Circuit Court of Appeals...

A federal appeals court tossed out a nearly $320,000 award to a thyroid cancer victim who blamed her disease on radiation from the government's Hanford nuclear installation, which made plutonium for bombs for four decades.A three-judge panel of the 9th U.S. Circuit Court of Appeals...