Quantum Mechanical Model Of Atom

The energy of a photon emitted during a transition is related to the wavelength of the photon by the equation: where: - is the energy of the photon, - is Planck’s constant ( ), - is the speed of light ( ), - is the wavelength of the photon.
Step 1: Calculate the energy of the photon. Given that , we can substitute the values into the equation:
Step 2: Convert energy from joules to electron volts. Since , we convert the energy:
Step 3: Check the energy differences between the levels. Now, we check the energy differences between the levels:
- - - The transition from level A to level D gives the energy of 10 eV, which matches the energy of the photon calculated.
Thus, the correct transition is .