Question

The wavelength of the first line in Balmer series in the hydrogen spectrumis . What is the wavelength of the second line. 

Solution

Correct option is

The first line corresponds to n = 3. Therefore, 

         

              

              

we have seen above that . Hence 

       

            

  

            .

SIMILAR QUESTIONS

Q1

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

Q2

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

Q3

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

Q4

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

Q5

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

Q6

According to Bohr’s theory, the energy of an electron in the nth orbit of an atom of atomic number Z is proportional to 

Q7

The dimensions of the Rydberg’s constant are

Q8

In terms of the Rydberg’s constant R, the minimum wavelength in the Lyman series is  

Q9

The wavelength of the second line of Balmer series is 486.4 nm. What is the wavelength of the first line of Lyman series?

Q10

The energy needed to ionize the hydrogen atom in the first excited state is 3.4 eV. What is the ionization potential of hydrogen in the ground state?