| Argon |
| Symbol: Ar Atomic Number: 18 Atomic Mass: 39.948 atomic mass units Melting Point: -189.3* C (-308.74* F) Boiling Point: -186.0* C (-302.8* F) Protons/Electrons: 18 of each Neutrons: 22 Density at 293 K: 1.784 g/cm3 |
| ~The Basics~ |
| ~What an Argon Atom Looks Like~ |
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| ~Energy Levels~ |
| Number of Energy Levels: 3 First Energy Level: 2 Second Energy Level: 8 Third Energy Level: 8 |
| ~History~ |
| Argon was discovered in 1894 by Sir Willian Ramsey and Lord Rayleigh. It's name comes from the greed word argon, meaning inactive. Argon is used for lighting, and is obtained from the air. |
| ~Isotopes~ |
| Argon has 6 isotopes. Of these 6, the stable isotopes of Argon are Ar-36, Ar-38, and Ar-40. |
| ~Other~ |
| Argon is the third most common gas in the atmosphere. It takes up 1% of the atmosphere, which is an increase since the Earth was created. This happens because potassium that is radioactive eventually decays into argon. Argon is a colorless, and odorless gas. |
| For this website report, I used the following websites: http://www.chemicalelements.com/elements/ar.html |
| ~Uses~ |
| Argon is used in fluorescent and electric lighting. It is also used as an inert gas for certain types of welding. Another use is a blanket for the production of reactive elements. |
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| Bright lights like this one may contain Argon. |