Question

The radius of second orbit in an atom of hydrogen is R. What is its radius in third orbit?choose the correct option from the given options.
(A) 3R
(B) 2.25R
(C) 9R
(D) R/3

Answer 1

R=n^2R -----1as it is third orbit so, n=3 put in equation 1, R=n^2R, R=3^2R, R=9R.

The energy required to take the electron from first orbit to second orbit will in an orbit of radius r in hydrogen atom is central placentation.

The radius of third orbit is 3R and wave number ratio is atomic spectra of hydrogen.

Answer 2

Holla ^_^

☸ Required Answer is C). 9R

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