The Bohr model of the hydrogen atom pictures the electron as a tinyparticle movi

Question

The Bohr model of the hydrogen atom pictures the electron as a tinyparticle moving in a circular orbit about a stationary proton. Inthe n = 5 orbit the distance from the proton to the electron is132.25 multiplied by 10-11 m, and the linear speed of the electronis 0.44 multiplied by 106 m/s.
(a) What is the angular velocity of the electron in rad/s?
(b) How many orbits about the proton does it make each second?orbits/s
(c) What is the electron's centripetal acceleration? m/s2

I don't understand what the n=5 orbit means, and I am reallyconfused on this question. I would appreciate any help you canoffer.

Explanation / Answer

What I can answer is that n = 5 means energy level 5.

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