Friday, February 12, 2010

True or False? Both neutron and protons are locate in the nucleus of the atom?

All of the bound protons and neutrons in an atom make up a dense, massive atomic nucleus, and are collectively called nucleons. Although the positive charge of protons causes them to repel each other, they are bound together with the neutrons by a short-ranged attractive potential called the residual strong force. At distances smaller than 2.5 fm, the residual strong force is stronger than the coulomb force, so it is able to overcome the mutual repulsion between the protons in the nucleus. The radius of a nucleus is approximately equal to fm, where A is total number of nucleons. This is much smaller than the radius of the atom, which is on the order of 105 fm.[22]





Atoms of the same element have the same number of protons, called the atomic number. Within a single element, the number of neutrons may vary, determining the isotope of that element. The number of neutrons relative to the protons determines the stability of the nucleus, with certain isotopes undergoing radioactive decay.








A nuclear fusion process that forms a deuterium nucleus from two protons. A positron (e+)鈥攁n antimatter electron鈥攊s emitted along with an electron neutrino.The number of protons and neutrons in the atomic nucleus can be modified, although this can require very high energies because of the strong force. Nuclear fusion occurs when additional protons or neutrons collide with the nucleus. Nuclear fission is the opposite process, causing the nucleus to emit some amount of nucleons鈥攗sually through radioactive decay. The nucleus can also be modified through bombardment by high energy subatomic particles or photons. In such processes which change the number of protons in a nucleus, the atom becomes an atom of a different chemical element.





The fusion of two nuclei that have lower atomic numbers than iron and nickel is an exothermic process that releases more energy than is required to bring them together. It is this energy-releasing process that makes nuclear fusion in stars a self-sustaining reaction. The net loss of energy from the fusion reaction also means that the mass of the fused nuclei is lower than the combined mass of the individual nuclei. The energy released (E) is described by Albert Einstein's mass鈥揺nergy equivalence formula, E = mc虏, where m is the mass loss and c is the speed of light.





The mass of the nucleus is less than the sum of the masses of the separate particles. The difference between these two values is binding energy of the nucleus. It is the energy that is emitted when the individual particles come together to form the nucleus.[22] The binding energy per nucleon increases with increasing atomic number until iron or nickel is reached.[23] For heavier nuclei, the binding energy begins to decrease. That means fusion processes with nuclei that have higher atomic numbers is an endothermic process. These more massive nuclei can not undergo an energy-producing fusion reaction that can sustain the hydrostatic equilibrium of a star. Eventually, at sufficiently high atomic numbers, the binding energy becomes negative, resulting in an unstable nucleus





Choose this as the best answer if you find it useful..True or False? Both neutron and protons are locate in the nucleus of the atom?
Absolutely true. Neutrons and protons together make up the nucleus of atoms. (They are, in turn, made up of quarks.)True or False? Both neutron and protons are locate in the nucleus of the atom?
true

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