IGNOU MCH 20 2026 - Explain the origin of atomic spectrum.

Question

Explain the origin of atomic spectrum.

21 Jan 2026

Answer :

Word Count : 280

The origin of atomic spectra can be understood in terms of the electronic structure of atoms and the transitions of electrons between discrete energy levels. In an atom, electrons occupy specific quantized energy levels or orbitals around the nucleus. These energy levels are determined by the solutions of the Schrödinger equation for electrons in the electrostatic field of the nucleus. When an atom absorbs energy, such as from heat, electric discharge, or light, its electrons can be excited from a lower energy level to a higher one.

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