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Question

Which element having following electronic configurations has minimum ionization potential

  1. (a) 1 s to the power of 1 end exponent   
  2. 1 s to the power of 2 end exponent comma 2 s to the power of 2 end exponent 2 p to the power of 6 end exponent   
  3. (c) 1 s to the power of 2 end exponent comma 2 s to the power of 2 end exponent 2 p to the power of 6 end exponent comma 3 s to the power of 1 end exponent  
  4. 1 s to the power of 2 end exponent comma 2 s to the power of 2 end exponent 2 p to the power of 2 end exponent  

The correct answer is: (c) 1 s to the power of 2 end exponent comma 2 s to the power of 2 end exponent 2 p to the power of 6 end exponent comma 3 s to the power of 1 end exponent


    1 s to the power of 2 end exponent 2 s to the power of 2 end exponent 2 p to the power of 6 end exponent 3 s to the power of 1 end exponent. It belongs to IA group which has least ionization potential and it decreases down the group

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