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what are the properties of alpha perticles
Weegy: Alpha particles are made up of 2 protons and 2 neutrons, [ this gives them a strong positive charge. They are slow moving and can be stopped by a sheet of paper or skin. Their charge makes them highly ionising which means that they can damage living tissue if they get inside the body. Beta Particles are made up from electrons it's charge is zero. Their mass is very light (1/1836) . Beta's penetration abilities can travel through Aluminium or a thin sheet of a metal Gamma Particles are made up from a electromagnetic wave it's charge is negative it doesn't have a mass it can travel through Lead the properties of alpha particles? Alpha particles are relatively slow and heavy compared with other forms of nuclear radiation. The particles travels at 5 to 7 percent of the speed of light or 20,000,000 metres per second and has a mass approximately equivalent to 4 protons. Alpha particles are composite particles consisting of two protons and two neutrons tightly bound together (Figure 1). They are emitted from the nucleus of some radionuclides during a form of radioactive decay, called alpha-decay. An alpha-particle is identical to the nucleus of a normal (atomic mass 4) helium atom or a doubly ionised helium atom. Who discovered alpha particles? Ernest Rutherford, a New Zealand scientist, distinguished and named alpha rays in 1909. By measuring the charge and mass of alpha particles he discovered that they are the same as the nuclei of ordinary helium atoms. Rutherford's studies contributed to our understanding of the atom and its nucleus through the Rutherford-Bohr planetary model of the atom. ] (More)
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Asked 6/19/2012 4:42:39 AM
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Neco 2012 physics question and answer
Weegy: There is no leaked forum yet of the Neco 2012 Physics Q&A (More)
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Asked 6/19/2012 9:18:23 PM
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