Atomic Spectra

A gas atom when excited by heating or passing an electron through a discharge tube, gives off light. The light emitted is characterised by specific wavelength and frequency, and this is called line spectra .

A series of line spectra are produced depending on the nature of the substance.

Types of Spectra:

There are two types of spectra namely: emission spectra and absorptionAbsorption is the movement of digested food molecules from the digestive system into the blood (glucose and amino acids) and lymph (fatty acids and glycerol). The small intestine absorbs most of... More spectra.

1. Emission Spectra:

Electrons moving from a higher energyEnergy is the ability to do work. Energy exists in several forms such as heat, kinetic or mechanical energy, light, potential energy, and electrical energy. Units of Energy: The SI unit... More level to a lower energy level produce emission spectra. There are three types of emission spectra namely:

i. Line Spectra: This consists of lines