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27 The frequency of radiation emitted when theelectron falls from n = 4 to n = 1 in a hydrogenatom will be (Given ionization energy ofH = 2.18 x 10-18 J atom-1 and h = 6.625 × 10-34Js)[AIPMT-2004](1) 1.03 x1015 s-1 (2) 3.08 x 1015s-1(3) 2.00 x 1015 s1 (4) 1.54 x 1015 s-1

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