Finding energy for an elctronic transition. please help?

The energy (J) required for an electronic transition in a Bohr hydrogen atom from n = 2 to n = 3 is __________ J.

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  • 1 decade ago
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    The formula you would use is E=Rh [(1/ni^2)-(1/nf^2)]

    Rh is a constant (for hydrogen) and is 2.18 x 10^-18 J

    ni- is n initial

    nf is n final

    so 2.18 x 10^-18 J (1/2^2) -(1/3^2)

    2.18 x 10^-18 J (1/4-1/9)

    2.18 x 10^-18 J (5/36)

    =.303 x10^ -18 J

    or 3.03 x 10^-19 J

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