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Hydrogen atom in its ground is excited by means of monochromatic radiation of wavelength 975 Å. How many different lines are possible in the resulting spectrum ? Calculate the longest wavelength amongst them. You may assume the ionization energy for hydrogen atom as 13.6 eV.

Hydrogen atom in its ground is excited by means of monochromatic radiation of wavelength 975 Å. How many different lines are possible in the resulting spectrum ? Calculate the longest wavelength amongst them. You may assume the ionization energy for hydrogen atom as 13.6 eV.

Grade:upto college level

2 Answers

Rinkoo Gupta
askIITians Faculty 81 Points
9 years ago
Four Lines are possible in the resulting spectrum.
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Rinkoo Gupta
AskIITians Faculty
Deepak Patra
askIITians Faculty 471 Points
9 years ago
. \frac{238}{92}U ⟶ \frac{234}{90}X + \frac{4}{2}He \frac{234}{91}X ⟶ \frac{234}{90}Y + \frac{0}{-1}e
(i) Atomic number = 91
(ii) Mass number = 234

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