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Xenon
Beginning of paper
is element number 54 on the periodic table of the elements. It has a
mass of roughly 131 atomic mass units. There are 77 neutrons and 54 protons in
the nucleus of the atom. The symbol for is Xe and it belongs to the
family of elements called the noble gases. It is called a noble gas because the
valance shell of one atom contains a .... Middle of paper
.... to have a boiling point at a temperature that is lower than xenon. So the
scientists could predict that heating the mixture would leave krypton in the
container, while the faster boiling xenon leaving it. After the two scientists
separated krypton and xenon, they identified it as a new element through the
emission spectrum of the gas.
Xenon is used heavily in light bulbs. Many of the bulbs in camera
flashes have xenon in them, because ....
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Number of words: 619
Number of pages: 3 (approx. 250 words per double-spaced page)
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