1)Use the bohr model, calculate the orbital period in eachlevel(n=1,2,3)(adsbygoogle = window.adsbygoogle || []).push({});

2) the average lifetime of the first excited level of a hydrogen atom is 1.0 10^-8 s. In the bohr model, how many orbits does an electron in the n=2 level complete before returning to the ground level?

2. Relevant equations

E(n) = -13.60/(n^2) (1)

λ = hc/(E(2)-E(1)) (2)

f = c/λ (3)

f = (E(1)-E(2))/h (4)

T = 1/f (5)

h = 6.626*10^-31 J*s

r(n) = ε(n^2*h^2)/(π*m*e^2) (6)

m=9.109*10^-19 kg

ε(0) = 8.85 * 10^-12 C^2/N*m^2

e = 1.60*10^-19 C

3. The attempt at a solution

After i have numerically inserted the values in the equations (4),(1) and (5) i got i to be

3.42*10^-16 s, 3.2466*10^-16s and 4.10*10^-16 is that correct ?

In 2) should i calculate circumference to begin with ?

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# Homework Help: Calculate the orbital period

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