Calculate the energy of a photon emitted when an electron in a hydrogen atom undergoes a transition from n=7 to n=1

Answer : The energy of photon =

Solution : Given,

Final energy level = 1

Initial energy level = 7

Formula used :

   ..........(1)

where,

= wavelength

R = Rydberg's constant = 1.0974

= final energy level

= initial energy level

Now put all the given values in above formula (1), we get the value of wavelength.

=  

Now we have to calculate the energy of photon by using formula,

where,

E = energy

h = planck's constant =

c = speed of light =

= wavelength

put all the values in this formula, we get the energy of photon.

=

hloride, what is the mass of calcium in

explanation:

the answer is c i took the test