Month: November 2019

Discovery of protons and neutrons

Discovery of protons and neutrons :- Electrical release carried out in the modified cathode ray tube led to the discovery of canal rays carrying approvingly charged particles. The characteristics of these flatteringly charged particles are listed below. (i) Unlike cathode rays, buildup of profitably charged particles depends concerning the flora and fauna of gas finishing …

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Discovery of Neutrons

The discovery of the neutrons and its properties was central to the extraordinary developments in atomic physics in the half of the 20th century. Early in the century, ernest rutherford developed a crude model of the atom, based on the hans geiger experiment of Hans Geiger and Ernest Mars den in this model, atoms had their mass and positive electric charge or cation charge concentrated in a very small nucleus. By 1920 chemical isotopes had …

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Discovery of protons

Discovery of protons :- Protons are subatomic particles that, with neutrons and electrons, are the principal constituents or the main part of atoms. Protons are +ve charged particles that reside within the nucleus of associate atom. These protons add the general charge of a molecule. The mass of the nucleon is 1.6727g x ten raised to -24, the electron or negative charge 9.110g x 10 raised to -28. Through scientific discovery, protons are accepted because the particle …

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Atomic Models

Atomic Models :- Observations obtained from the experiments or the practices have suggested that Dalton’s indivisible atom is composed of sub-atomic particles carrying positive and negative charges or cation and anion. The major problems before the scientists after the discovery of sub-atomic particles were: • to account for the stability of atom, • to compare …

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Charge to mass ratio of electron

Charge to mass ratio of electron :- In 1897, British man of science J.J. Thomson measured the magnitude relation of electrical charge (e) to the mass of negatron (me ) by exploitation electron beam tube and applying electrical and field perpendicular to every different yet on the trail of electrons (Fig. 2.2). once solely field is applied, the electrons deviate from their path and hit the electron beam tube at purpose A (Fig. …

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Discovery of Electron

Discovery of Electron :- In 1830, Faraday showed that if electricity is skillfuld true|gone through|had undergone saw |felt responded to|suffered} an answer of an solution, chemical reactions occurred at the electrodes, that resulted within the liberation and deposition of matter at the electrodes. He developed bound laws. These results recommended the particulate nature of electricity. In middle decennary several scientists primarily Faraday began to check discharge in part exhausted tubes, called …

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