According to Bohr’s model, what is the significance of an electron transition from a higher energy orbit to a lower energy orbit?

Correct option is D

Correct Answer: D
Explanation:
· In Bohr’s model of the atom, when an electron jumps from a higher energy orbit (excited state) to a lower energy orbit (ground or lower state), it emits a photon.
· The energy of the photon corresponds exactly to the difference in energy levels: ΔE=Ehigher−Elower=hν
Information Booster:
· Bohr proposed in 1913 that electrons revolve only in discrete orbits with fixed energies.
· Radiation is emitted during downward transition and absorbed during upward transition.
· Angular momentum of electrons is quantized: L=nh2πL = n \frac{h}{2\pi}L=n2πh​.
· This model explains hydrogen spectrum lines (Lyman, Balmer, Paschen series, etc.).
· Still forms the basis of modern quantum mechanics despite limitations.