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[" 6.An hydrogen atom (ionisation energy...

[" 6.An hydrogen atom (ionisation energy "13.6eV)" jumps from third excited state to first excited state."],[" The energy of photon emitted in the process is "],[[" (A) "1.89eV," (B) "2.55eV," (C) "12.09eV," (D) "12.75eV]]

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