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Models of the Atom


Christine Holda

on 26 September 2012

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Transcript of Models of the Atom

5.1 Models of the Atom Rutherford’s model could not explain the chemical properties of elements.
A new model proposed by Niels Bohr said that an electron is found only in specific circular paths, or orbits, around the nucleus. Development of the Atomic Theory Bohr's Model Each possible electron orbit has a fixed energy – called energy levels.
A quantum of energy is the amount of energy required to move an electron from one energy level to another energy level. Quantum Mechanical Model Determines the allowed energies an electron can have and how likely it is to find the electron in various locations around the nucleus. Atomic Orbitals: A region of space in which there is a high probability of finding an electron.
Principal Quantum Numbers: Energy levels of electrons are labeled by principal quantum numbers (n).
Different atomic orbitals are denoted by letters s, p, d, and f
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