International Gold Number of Neutrons
The International Gold Number of Neutrons (IGNN) is a numerical value that quantifies the average number of neutrons present in the nucleus of a gold atom. It is determined by taking the weighted average of the neutron numbers of all the stable isotopes of gold, with the weights being the relative abundances of each isotope.
Gold has a single stable isotope, namely, gold-197. The atomic number of gold is 79, which means that the nucleus of a gold atom contains 79 protons. The neutron number of gold-197 is 118. Therefore, the IGNN of gold is:
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IGNN = (118 * 1) / 1 = 118
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The IGNN is an important nuclear property that is used in various fields of science and technology. For example, it is used in neutron activation analysis, where the neutron number of a sample is determined by irradiating it with neutrons and measuring the resulting gamma rays. The IGNN is also used in nuclear physics research, where it helps in understanding the structure and properties of atomic nuclei.
The IGNN of gold is 118, which makes it a relatively neutron-rich isotope. This is because gold is a heavy element, and heavy elements tend to have more neutrons than lighter elements. The high neutron number of gold makes it a good target for neutron capture reactions.
The IGNN is a fundamental property of gold that is used in a variety of applications. It is a valuable tool for scientists and engineers who work with gold and other heavy elements.
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