Calculate the energy, in joules, required to excite a hydrogen atom by causing an electronic transition...

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Answer 1

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Answer #1

The energy of nth orbit is = En = -RH (1/n²)

Hence E1 = -2.18 x 10^-18 / 1²

= -2.18 x 10^-18 J

and E4 = -2.18 x 10^-18 / 4²

= - 0.13625 x 10^-18 J

Hence the energy of excitation from n=1 to n=4 is

E4 - E1 = - 0.13625 x 10^-18 J - (-2.18 x 10^-18 J )

= 2.04375 x10^-18 J

Answer 2

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