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EileenDada

PeriodicTable
by

Mike Hinton

on 11 December 2012

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Transcript of EileenDada

photo (cc) Malte Sörensen @ flickr Parts Of The Periodic Table -The periodic table contains 117 elements, with 94 of these naturally occurring on the Earth.

-As the table progresses from left to right, and top to bottom, the atomic number of the elements increases.
-The atomic number is the count of the protons contained in the atomic nucleus.

-The seven rows in the table represent periods. Each element in a single row has the same number of electron shells, which surround the atomic nucleus.

-The table's 18 columns, read vertically from top to bottom, represent groups. All elements in a group have the same number of electrons orbiting the nucleus in the outermost shell.

-Some periodic tables display a color code that shows the state of the element--solid, liquid, gas, or unknown--at zero degrees Centigrade.


-At the bottom of the periodic table are two additional rows of 14 elements each. These are the 30 rare earth metals, most of which are synthetic.





Examples Hydrogen - H
Carbon - C
Nitrogen - N By: Eileen Dada Periodic Table
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