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In a classical model of the hydrogen atom, the electron orbits a stationary proton in a circular orbit.

What is the radius of the orbit for which the orbital frequency is 1.4?1012s?1 ?

Express your answer to two significant figures and include the appropriate units.

Added Mon, 20 Jul '15

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Fe= Fc

Ke^2/r^2 = mv^2/r

r=Ke^2/mv^2

V^2=Ke^2/mr ........1

?Frequency =

2?r/v ....................2

from 1&2 we have

1/frequency = 2*Pi*r/sqrt(ke2/mr)

on substituting the values we have raidus r3/2= 1.8*10-12m

r= 1.49*10-8m

Added Mon, 20 Jul '15

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