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       #Post#: 1789--------------------------------------------------
       Daily question-40
   DIR By: Shiva
       Date: December 31, 2012, 12:34 pm
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       In the periodic table
       (a) The horizontal rows are called groups
       (b) There are eighteen elements in the third period
       (c) There are two elements in the first period
       (d) The vertical columns are called periods
       #Post#: 1800--------------------------------------------------
       Re: Daily question-40
   DIR By: Sobia Sarwar
       Date: December 31, 2012, 9:39 pm
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       (c)there are two elements in first period
       #Post#: 1806--------------------------------------------------
       Re: Daily question-40
   DIR By: Shiva
       Date: January 1, 2013, 11:46 am
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       Yep :-)
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