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 t ....
Middle of paper
.... fractional distillation, the process separates two elements
that have different boiling points. Basic-ally, when a sample is heated, the
faster element leaves first, leaving the second element behind. Krypton was
known 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 ....
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Page count: 3 (approximately 250 words per page)
