Absorption line spectra exhibited by atoms is a result of

Assessment: WAEC SSCE - Physics - 2000 (Objective) Subject: Physics

Question 1 Report

Absorption line spectra exhibited by atoms is a result of
Answer Details
Absorption line spectra exhibited by atoms is a result of the transition of an electron from a higher to a lower energy level. When energy is absorbed by an atom, an electron moves from a lower energy level to a higher one. Conversely, when an electron moves from a higher energy level to a lower one, energy is emitted in the form of electromagnetic radiation. This radiation is observed as a spectrum of colored lines with specific wavelengths that correspond to the specific energy levels involved in the transition. The spectrum produced is unique for each atom, providing a way to identify the atoms present in a sample. Therefore, the correct option is (d) transition of an electron from a higher to a lower energy level.

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