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Created with Fabric.js 1.4.5 molybdenum number of energy levels:7first energy level:2 second energy level:8third energy level:18fourth energy level:32fifth energy level:23sixth energy level: 8 seventh energy level:2 group-6period- 5 chemical properties As a solid, molybdenum has a silvery-white metallic appearance. It more commonly occurs as a dark gray or black powder with a metallic luster. Its melting point is about 2,610°C (about 4,700°F) and the boiling point is 4,800 to 5,560°C (8,600 to 10,000°F). Its density is 10.28 grams per cubic centimeter. physical properties Molybdenum does not dissolve in most common chemical reagents. A chemical reagent is a substance used to study other substances, such as an acid or an alkali. For example, molybdenum does not dissolve in hydrochloric acid, hydrofluoric acid, ammonia, sodium hydroxide, or dilute sulfuric acid. These chemicals are reagents often used to test how reactive a substance is. Molybdenum does dissolve in hot strong sulfuric or nitric acids, however. The metal does not react with oxygen at room temperatures, but does react with oxygen at high temperatures. history of element In 1768, the Swedish scientist Carl Wilhelm Scheele determined that molybdenite was a sulfide compound of an as-yet unidentified element, by decomposing it in hot nitric acid and heating the product in air to yield a white oxide powder. In 1782, at Scheele's suggestion, Peter Jacob Hjelm chemically reduced the oxide with carbon, obtaining a dark metal powder that he named 'molybdenum." In 1891, the French company Schneider & Co. first used molybdenum as an alloying element in armour plate steel. uses of molybdenum molybdenum is used to make airplanes, spacecraft,and missile parts. it was also used to make heat resistant steel.the cost of using molybdenumis $44 per 100 grams.molybdenum is important throughout the world because we use it to strengthen our sky scrapers which holds it up. Scheele demonstrated that the element was not lead, and named the new element after the mineral. Molybdenum is vital for the enzymes in bacteria to undergo nitrogen fixation. It is the twenty-fifth most commonly occurring element in the Earth's oceans. fun facts
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