Is neptunium man-made?
Uranium, found in rock, soil and water, undergoes a natural nuclear reaction that results in small amounts of isotopes Np-237 to Np-240. The majority of neptunium, however, is anthropogenic; that is, it is created as a byproduct of reactions in nuclear power plants.
Why is it called americium?
Americium was first isolated as a pure compound by Burris Cunningham in 1945, at the University of Chicago. The element was named after America, because it is located below Europium (element 63) in the periodic table, which was named after Europe.
Is americium still used in smoke detectors?
Radiation Facts Smoke detectors are common household items that keep you and your family safe by alerting you to smoke in your home. Ionization smoke detectors use a small amount of radioactive material, americium-241, to detect smoke.
How was americium found?
Americium was discovered in 1944 by the American scientists Glenn T. Seaborg, Ralph A. They produced americium by bombarding plutonium-239, an isotope of plutonium, with high energy neutrons. This formed plutonium-240, which was itself bombarded with neutrons.
What is the symbol for americium?
Am
What are three elements named after planets?
The four elements named after planets are mercury, uranium, neptunium, and plutonium.
What are 3 elements named after a continent?
Americium is named after the Americas, and europium after Europe.
What is the symbol for germanium?
Ge
What makes germanium unique?
Pure germanium is a hard, lustrous, gray-white, brittle metalloid. It has a diamondlike crystalline structure and it is similar in chemical and physical properties to silicon. Germanium is stable in air and water, and is unaffected by alkalis and acids, except nitric acid.
What is the symbol of Teluro?
Te
Where is tellurium used?
Tellurium has been used to vulcanise rubber, to tint glass and ceramics, in solar cells, in rewritable CDs and DVDs and as a catalyst in oil refining. It can be doped with silver, gold, copper or tin in semiconductor applications.
Is iodine used in photography?
Iodine, silver iodide, and potassium iodide are used in photography. Iodine is also used in the production of dyes.