Question:
Using the relevant Bohr's postulates , derive the expression for the speed of the electron in the nth orbit.
Answer:
According to Bohr’s second postulate, the electron revolve only in certain discrete non radiating orbits for which the angular momentum of the revolving electron is an integral multiple of h/2∏ where h is Plancks constant
mvr = nh / 2∏
Hence, v = nh / 2∏ mr
This gives the speed of the electron in the n th orbit.
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