Q:
      
      
         
            
What does the Aufbau Principle state
         
       
      
      
      
          
      
      
          Answer & Explanation
         Answer: A) Electrons will be added to an atom starting from the lowest possible level or sublevel.         
         
Explanation: The Aufbau Principle states that in the ground state of an atom, an electron enters the orbital with lowest energy first and subsequent electrons are fed in the order of increasing energies.
       
      
      
      
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