Question 8 20 pts A wavelength of 4.653 pm is observed in a hydrogen spectrum for...

Question

Question

science physics

Answer 1

Answer #1

Sol::
Given:

Wavelength (λ) = 4.653*10^-6 m
Level nf = 5
Rydberg constant(R) = 1.09*10^-7 m
ni = ?

We have

1/λ = R(1/nf² - 1/ni²)

rearranging it we get

ni = √[1/(1/nf² - 1/λR)]
= √[1/(1/25-1/(4.653*10^-6)(1.097*10^7)]
= 6.999
≈ 7

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Answer 2

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