Manganese

Manganese , with the symbol Mn, is a fragile metallic element with a silvery-white appearance. It is used mainly in alloys. Manganese is one of the transition elements of the periodic system . Its atomic number …

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Arsenic

Arsenic . Chemical element, whose symbol is As and its atomic number, 33. Arsenic is widely distributed in nature (about 5 x 10-4% of the earth’s crust). It is one of the 22 …

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Lead blood test

Lead blood test. Also called blood lead levels or blood lead levels is a blood test that measures the amount of lead in the serum . Summary [ hide ] 1 How the analysis is performed 2 Preparation for …

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Antimony

Antimony. It is a chemical element with atomic number 51 located in group 15 of the periodic table of elements. Its name and abbreviation (Sb) comes from Stybian , a term now in disuse, …

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Americium

Americium . Chemical element, symbol Am , atomic number 95. Summary [ hide ] 1 Discovery 2 Effects of Americium on health 3 Environmental effects of Americium 4 Sources Discovery In 1944 Glenn Theodore Seaborg and his colleagues at the University of Chicago obtained 241Am by bombarding …

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Heavy water

Heavy water . It is a somewhat heavier class of water (has a higher density) than common. A liter of heavy water weighs 1,105 grams, while a liter of ordinary water weighs 1,000 …

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Sulfhidric acid

Sulfhydric Acid. It is a product resulting from the aqueous solution of hydrogen sulfate, represented by the chemical formula H 2 S, found both in liquid and gas form (in this case it …

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