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The ionisation energy of Li to the power of 2 plus end exponent atom in ground state is :

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  1. 13.6 x 9 eV    
  2. 13.6J    
  3. 13.6 erg    
  4. 13.6x 1019 -J    

    Answer:The correct answer is: 13.6 x 9 eV

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