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in Periodic Table and Electronic Configuration by (35.6k 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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