42 Mo Molybdenum 95.96 2-8-18-13-1
Chemical & Physical Properties Molybdenum is defined by several chemical and physical properties. For example, the physical appearance of molybdenum is silvery-white and hard as a solid. Molybdenum is a solid at room temperature. However, as a powder, it is a darker color with a more metallic luster. This transition metal is known for its high melting point, 4,753°F(2,623°C) as well.
History and Discovery In 1778, Swedish chemist Carl Welhelm Scheele discovered Molybdenite (MoS2), which is a compound of molybdenum and sulfur. Scheele confused Molybdenites as a lead compound instead. Molybdenum was not discovered until 1781. In 1781, Peter Jacob Hjelm isolated molybdenum from molybdenite. Early chemists believed that graphite and molybdenite were the same. However, Hjelm realized that it was actually a different form of graphite. When obtained Hjelm ended up with a dark, metallic powder that was molybdenum. Hjelm Scheele
Fun Facts: ● Molybdenum is the 54th most common element in the Earth's crust. ● Molybdenum frequently takes the place of tungsten in steel alloys. ● Molybdenum is a micronutrient essential for life. ● Most of molybdenum is toxic. ● In enzymes, molybdenum is often present. ● It is required by almost all living organisms. ● Molybdenum is closely related to tungsten in terms of chemical properties.
During high temperatures, molybdenum is very strong and resistant to expansion. Molybdenum is both malleable and ductile. One of molybdenum’s chemical properties is that it is flammable. Furthermore, in most chemical reagents, which are used to study substances, molybdenum does not dissolve.
It also has a density of 10.28 grams per cubic centimeter. At room temperature, molybdenum does not react with oxygen but does react with oxygen at higher temperatures. In addition, Molybdenum can
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- Fall '19
- Aluminium, Chemical element