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The three elements that I picked and they are Neon, Hydrogen, and Helium. Also I’m going to tell you how the three elements were discovered and what the symbol, and when it was discovered.
Neon was discovered in 1898 by Sir William Ramsay. Neon is the second lightest inert gas. Neon’s atomic weight is 20.1797 and atomic number 10. The symbol for neon is NE. Neon is also a bright light that is on signs and glow sticks.
In 1766, Henry Cavendish was the first to recognize hydrogen gas as a discrete substance and in the 18th century. Hydrogen is the chemical element with atomic number one. Hydrogen is the lightest element. The symbol for hydrogen is H. Hydrogen is gas that goes into your car.
Helium is the chemical element with atomic number two and an atomic weight of 4.002602. On Earth it is relatively rare 0.00052% by volume in the atmosphere. The symbol for helium is HE. If you inhale helium your voice will change funny.
I picked Neon, Hydrogen, and Helium because I think they were easy to do. Also they looked interesting to me. Thanks for reading and I hoped you liked it!
Article posted May 17, 2012 at 09:03 AM •
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