Wed February 20, 2013 By:

Mam, how can we calculate the atomic no of an element if its group no & period no is given?

Expert Reply
Wed February 20, 2013
Period number gives you information about the number of shell and group number gives u the information about the outermost shell by filling innermost shell you have the distribution of the electrons and than after adding all the no of electrons in different shell you can get your atomic number.
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