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Elements Krypton & Pallamium
Essay specific features
Written by:
David K
Date added:
March 23, 2014
Level:
University
Grade:
A
No of pages / words:
1 / 271
Was viewed:
3161 times
Rating of current essay:
Essay content:
The other noble gases are helium,
xenon, neon, argon and radon. I was discovered
in England in 1898 almost 100 years ago by Sir
William Ramsey and Morris W. Travers. They
found me in the less volatile part of inert-gas
mixture left after oxygen had been chemically
removed from a sample of air. I am about one
millionth of the earth's atmosphere...
displayed 300 characters
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I am about one
millionth of the earth's atmosphere. Only about 2 x
10-8% of the weight of the earth am I. I am a
colorless, odorless and tasteless gas. My atomic
number is 36. My atomic weight is 83.80. My
melting point is -157.20°C or -251.5°F. My gas
density at 0°C is 3.749 g/liter. My valence is 0,2...
displayed 300 characters
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