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Atomic Physics – 9

9. The ionization energy of hydrogen atom is 13.6 eV. The ionization energy of helium atom would be :

(a) 13.6 eV 
(b) 27.2 eV 
(c) 54.4 eV
(d) 62.8 eV 

Answer : (c)

Explanation : No answer description available for this question. Let us discuss.

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