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70. First excitation potential of H atom is (a) 10.2 eV (b) 3.4 eV (c) 0 (d) -3.4 eV

Answer» 70. First excitation potential of H atom is (a) 10.2 eV (b) 3.4 eV (c) 0 (d) -3.4 eV


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