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- HYDROGEN
- Atomic symbol - H
- Atomic weight - 1.00794
- Atomic number - 1
- Electron configuration - 1
- Oxidation states - Ò1
- State of matter - gas
- Alkali metal
- Discovered in 1790 by Henry Cavendish
- Boiling point: -252.8 ¯C
- Melting point is -259.14 ¯C
- Notes:
- Free hydrogen is rare because of the reactivity of this element.
- Hydrogen is not very reactive at room temerature but at higher temperatures
- it burns vigorously, and often explosively, in air or oxygen to form water.
- In the presence of a catalyst and under pressure hydrogen will combine with
- vegetable oils to form solid fats used as shortening, this process is known as
- hydrogeation. This process is extensivly used in the refining of oil products
- to increase the yields of gasoline. It's also commonly used to make ammonia
- and many other chemical substances. Other uses are to fuel rockets and in fuel
- cells to generate electricity.
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