describe the perdic table in terms arrangment of element by increasing atomic number in periods and in group

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can anyone explain this for me please 

Posted Thu 11th October, 2012 @ 10:27 by nada

3 Answers

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Atomic number is the number of protons wich is also the number of electrons. The elements in the periodic table are arranged in order of atomic number. The elements are also organised by the number of electrons in the outer electron shell. This tells us wich group (column) the element goes in. This is why elements in the same group display similar properties. The periods (rows) show how many electron shells there are in those elements. That's why the periodic table is arranged as it is :) i hope this helps *** 

Answered Thu 11th October, 2012 @ 19:44 by sammy
Edited by sammy on Thu 18th October, 2012 @ 19:01
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@sammy don't you mean the number of protons are the same as the number of electrons? :)

Answered Wed 17th October, 2012 @ 23:00 by furuba fan
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yeah, i do :) thanks for pointing that out

Answered Thu 18th October, 2012 @ 19:01 by sammy