Science

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1. 
   mwestwood Teacher
   Community / Jr. College

   It is my understanding that all you have to do is round the atomic weight, which is given to you in the Periodic Table, to the nearest whole number.

   (Mass Number = Number of Protons + Number of Neutrons)

   Sources:

   http://www.enotes.com/uxl-science-encyclopedia/atomic-mass

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   Posted by mwestwood on Sunday September 28, 2008 at 9:50 AM
   
   

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