1.

Which of the following statement is correct with respect to an electron having de-Brogliewavelength in a Bohr’s orbit of He+ ion, equal to1.59 πÅ?(1) The electron is present in 2nd Bohr’s orbit ofHe+ ion(2) On de-excitation to ground state, emittedphoton(s) may lie in infrared or visible region(3) Total energy of electron in given Bohr’s orbitis – 3.4 eV(4) On de-excitation the maximum wavelength ofemitted photon is 1644 Å (approx.)(only one choice correct)​

Answer»

(2) On de-excitation to ground state, emittedphoton(s) MAY LIE in infrared or VISIBLE regionExplanation:it is correct



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