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Hydrogen atom in its ground state is exc...

Hydrogen atom in its ground state is excited by means of monochromatic radiation of wavelength `970.6 Å`. How many lines are possible in the resulting emission spectrum ? Calculate the longest wavelength amongst them. You may assume that the ionisation energy for hydrogen atom is 13.6 eV. Given Planck's constant `= 6.6 xx 10^(-34)Js, " " c = 3 xx 10(8) ms^(-1)`

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