atomic spectra

Atomic Spectra - A spectrum is an assembly of energy levels in the form of radiations emitted by an atom in its excited state. Every atom gives discontinuous line spectra. Each line in the spectra corresponds to a specific wavelength and i..

A spectrum is an assembly of energy levels in the form of radiations emitted by an atom in its excited state. Every atom gives discontinuous line spectra. Each line in the spectra corresponds to a specific wavelength and it is unique to a given element...

When a substance is heated to a high temperature, the atoms in the vapours get energized. These energized atoms then return to the ground state by emitting electromagnetic radiations of certain definite wavelength. A series of bright lines separated from each other by dark spac..

One can understand atomic spectra if one knows the concept of atomic energy levels. The movements of electrons from one level to another causes the spectra. The work of a spectoscopicst is to find the energy levels of an atom from the measured..

Emission and Absorption Spectra - One can understand atomic spectra if one knows the concept of atomic energy levels. The movements of electrons from one level to another causes the spectra. The work of a spectoscopicst is to find the energy levels ..

>As the radiating energy of a revolving electron (according to classical electromagnetic theory) continuously decreases the electron should follow a spiral path and fall into the nucleus. So this atomic model could not account for the stability of the atom. The observed spe..

where 'h' is a constant called 'Planck's constant' and is the frequency of radiation absorbed or emitted. The value of 'h' is 6.626x10 -34 J s -1 . The absorption and emission of light due to electron jumps are measured by use of spectrometers. This model of the atom was able to explain t..

'. The electrons are like plums in a pudding (positive charge). The seeds in a watermelon fruit can be given as a parallel comparison. With this model he tried to explain the observed spectra of elements. According to him, the vibrations of electrons would give rise to electromagnetic ene..

Two main types of spectra are: - Emission spectrum - Absorption spectrum The emission spectrum is further of three types: - Continuous emission spectrum, which contains all the wavelengths in a particular region. The range of wavelengths emitted depends only on temperature of the so..