CHEM 1070 Chapter Notes - Chapter 9: Pauli Exclusion Principle, Electron Configuration, Electromagnetic Spectrum
9 Oct 2016
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Document Summary
When the elements are arranged in order of increasing atomic number, certain sets of properties recur periodically. Bohr model: a model for the atom in which electrons travel around the nucleus in circular orbits at specific, fixed distances from the nucleus. Quantum-mechanical model: the foundation of modern chemistry; explains how electrons exist in atoms and how they affect the chemical and physical properties of elements. Electromagnetic radiation: a type of energy that travels through space at a constant speed of 3. 0*10^8 m/s and exhibits both wavelike and particle like behavior, light is a form of electromagnetic radiation. Frequency: the number of cycles or crests that pass through a stationary point in one second. Wavelength and frequency are inversely related- the shorter the wavelength, the higher the frequency. The wavelength of electromagnetic radiation determines the amount of energy carried by one of its photons. The shorter the wavelength, the greater the energy of each photon.
