Krypton is a noble gas with an atomic number of 36 that was discovered in 1898 by Sir William Ramsay and Morris M. Travers while studying liquefied air. It makes up about 0.0001% of Earth's atmosphere and 0.0003% of Mars' atmosphere. Krypton is used in fluorescent light bulbs and photographic flash lamps.

1. Atomic Number: 36
Atomic Symbol: Kr
Atomic Weight: 83.798
Krypton

2. Word origin: The term krypton comes from the Greek word kryptos,
which means hidden.

3. Discovery: The element was discovered by Sir William Ramsay, a Scottish chemist, and
Morris M. Travers, an English chemist, in 1898. They were studying liquefied air and saw
a small amount of liquid krypton after the air had boiled away.

4. The element is one of the noble gases, a category of chemical elements that all
have similar properties.
Solid krypton is a milky-white crystalline substance with atoms arranged at the
corners and points of cubes in its structures. This is called a face-centered cube
structure that is common to most noble gases. Krypton gas has bright green and
orange spectral lines. These spectral lines are easy to produce and can look
quite beautiful.

5. Sources of krypton
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Krypton is a rare gas. The earth's atmosphere contains about 0.0001 percent krypton.
Scientists have found the atmosphere of Mars contains 0.0003 percent of krypton.
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Uses of krypton
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As it is quite rare, krypton is not commonly used for many purposes. It is used in
combination with argon in some fluorescent light bulbs. It is also used in some
photographic flash lamps for high-speed photography.

6. The facts from the project was from!
http://www.livescience.com/!
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