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ago in Periodic Table and Electronic Configuration by (23.1k points)
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Write the electronic configuration of sodium and argon and complete the Table.

Element  Shells
 K  L  M
 11Na .......... ..........  ............
   18Ar    ...........   ............   .......

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Element  Shells
 K  L  M
 11Na 2 8  1
   18Ar   2    8   8 
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