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Computer graphic of structure of an atom

Computer graphic of structure of an atom

A152/0026

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Credit

JOHN RAFFO / SCIENCE PHOTO LIBRARY JOHN RAFFO / SCIENCE PHOTO LIBRARY

Caption

Computer abstract representation of the structure of an atom. It is formed by a dense central region, the nucleus, in which protons and neutrons (blue) are closely packed together. In the model here represented the nucleus is surrounded by electrons (tiny brown spheres) which move around the nucleus in elliptical orbits. This is the old, classical atomic model which was supplanted by the quantum mechanics theory. According to the quantum model it is not possible to specify a precise trajectory for the electrons moving around the nucleus. The quantum theory gives instead the distribution of the probability of finding an electron in a given element of space.

Release details

Model release not required. Property release not required.

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