Question

the frequency of an electron is n ,when it is revolving around nucleus of hydrogen atom in 1st orbit. the frequency of same electron when it is revolving in 2nd orbit is

Answer 1

The frequency will be 2n
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Answer 2

The frequency of the electron becomes 1/8th of its initial frequency.

Let frequency in nth orbital be f .

Frequency in an orbital is directly proportional to the angular velocity in the orbital, f ∝ w.

=> f ∝ w

=> w ∝ v/r

v ∝ 1/n² , r ∝ n

=> w ∝ 1/n³

=> f ∝ 1/n³

The frequency in the nth orbital will be directly proportional to 1/n³.

f' = frequency in second orbital

f' = frequency in the first oribal / (2)³ , it the 1/8th of the frequency in the first orbital.