JEE CHEMISTRY MCQ: STRUCTURE OF ATOM

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A sample of hydrogen atoms containing all the atoms in a particular excited state absorb radiations of a particular wavelength by which the atoms get excited to another excited state. When the atoms finally de-excite to the ground state, they emit the radiations of 10 different wavelengths. Out of these 10 radiations, 7 have wavelengths shorter than the absorbed radiation and 2 have wavelength longer than the absorbed radiation. The orbit number for the initial excited state of atoms is

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Correct option: A

The correct answer is A (3) because the atom absorbs radiation to reach the 5th orbit and emits 2 wavelengths longer than the absorbed one, indicating the initial state was the 3rd orbit.

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