ratio of neutron and proton during emission of alpha particles

The stability linked to the n - p ratio is explained by strong n - p as well as p - p attractive forces operative at the level of nuclear distances. For heavier nuclides, p - p repulsions start to offset the attractive forces and an excess of neutrons over protons is r..

Search for the missing particle - Although Rutherford's model was enormously successful at explaining the scattering of alpha particles, there was a problem when the experimental data were used to calculate the mass of the nucleus. From the results of the scattering ex..

They are deflected by electric and magnetic fields. The deflection is less compared to that of b particles, because a particles are heavy. They affect a photographic plate and cause fluorescence on striking a fluorescent material. They ionise the gas through which th..

Although Rutherford's model was enormously successful at explaining the scattering of alpha particles, there was a problem when the experimental data were used to calculate the mass of the nucleus. From the results of the scattering experiments, it was possible to calculate the..

Alpha rays consist of stream of positively charged particles carrying charge of +2 units and a mass of four units on the atomic weight scale (i.e., 4 amu). They consist of 2 protons and 2 neutrons. In other words, these particles are helium nuclei..

The b - particles are electrons - 1 e 0 with mass number zero and charge equal to -1. Since nucleus does not contain electrons, the emission of b - particle from a radioactive nucleus is believed to arise from the conversion of a neutron into proton..

Whenever a - particle is emitted a neutron is lost and a proton gained. Therefore the neutron/proton ratio is reduced by - radiation. When an - particle is emitted the nucleus loses two protons and two neutrons. ..

Summary - Atoms are made up of three fundamental particles: electrons, protons and neutrons. Discharge tube experiments by William Crookes and J.J. Thomson led to the discovery of electron. Goldstein's experiment with the discharge tube having a perforated cathode led ..

Summary - Radioactivity Spontaneous emission of active rays by certain unstable elements. Three types of radiations are: (i) Alpha particles He 2 + ion (Helium nuclei). (ii) Beta - rays - consist of electrons. (iii) Gamma - rays - High energy electromagnetic rays. ..

Nuclear Fission - Neutrons are considered as the best projectile particles to hit the target (uranium) nucleus. The uranium may absorb these neutrons and become 9 2 U 2 3 6 which later splits into two smaller nuclei. In addition two neutrons are released and ..