According To Bohr’s Theory, The Energy Of An Electron In The nth Orbit Of An Atom Of Atomic Number Z Is Proportional To 

The energy of the electron of hydrogen orbiting in the stationary orbit of radius r_n is proportional to

The energy required to excite a hydrogen atom from n = 1 to n = 2 energy state 10.2 eV. What is the wavelength of the radiation emitter by the atom when it goes back to its ground state?

The ionisation potential of the hydrogen atom is 13.6 eV. Its energy in n = 2 energy state is

The innermost orbit of the hydrogen atom has diameter of 1.06 Å. What is the diameter of the tenth orbit? 

The difference lines in the Lyman series have their wavelengths lying between

The shortest wavelength in the :Lyman Series is 911.6 Å. Then the longest wavelength in the Lyman’s Series is 

Which of the following transition in a hydrogen atom emits the photon of lowest frequency?  

How many times does the electron go around the first Bohr orbit in one second? 

The electron orbits with principal quantum numbers n > 3 were not allowed, the number of possible elements would be  

The dimensions of the Rydberg’s constant are