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Categorize the following into elements and compounds with their respective symbols and atomicity:
Example:
1. Element - Argon :: \(Ar\) :: \(1\)
2. Compound - Copper sulphate :: \(CuSO_4\) :: \(6\)
 
Answer variants:
Sodium chloride
Lithium
\(Li\)
\(MgSO_4\)
\(16\)
\(1\)
\(2\)
\(NaCl\)
  
1. Element -  
 ::
 :: 
 
 
2. Compound - 
 :: 
 ::