Question

A one electron system has its electron revolving in the 3rd orbit. The light of maximum wavelength which can eject the electron from the third orbit has energy of 6.04 eV. Which of the following statement regarding the above mentioned species is/are true?

Answer 1

According to Bohr's theory,

$E\propto \frac{1}{n^2}$

Given, $E_3=-E⟶\left(1\right)$

Let energy in the $1^{st}$ orbit be $E_1$

Then $E_1/E_3=\frac{3^2}{1^2}=9$

$E_1=9E_3$

$Eqn\left(1\right)\Rightarrow E_1=-9E$ .