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posledela
1 year ago
15

Use the Rydberg equation to find the wavelength (in Å) of the photon absorbed when an electron in an H atom undergoes a transiti

on from n = 1 to n = 3.
Chemistry
1 answer:
lorasvet [3.4K]1 year ago
6 0

The wavelength of the photon is  1026  Å

Rydberg unit of energy corresponds to the energy of the photon whose wave number is Rydberg constant.

The value for the rydberg constant is 10 973 731.6 m-1

The formula for the rydberg constant for hydrogen is

1 / λ = Rh (1 / n1^2 - 1 / n2^2)

where Rh is the Rydberg constant

For the transition of an electron in a hydrogen atom from n = 1 to n = 3

1 / λ = Rh (1 / 1^2 - 1 / 3^2)

1 / λ = Rh (0.888)

λ = 1.126 / Rh

λ = 1.126 /  10 973 731.6

   = 1.026 * 10^-7

   = 1026  Å

Hence, the wavelength of the photon is  1026  Å

For more information click on the link below:

brainly.com/question/2187993

# SPJ4

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According to this law, the chemical equation can be treated as ordinary algebraic expression and can be added or subtracted to yield the required equation. That means the enthalpy change of the overall reaction is the sum of the enthalpy changes of the intermediate reactions.

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