CHEM 1000H Chapter Notes - Chapter 7: Emission Spectrum, Low Frequency, Bohr Model

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Chapter 7: the quantum mechanical model of the atom. Quantum-mechanical model: a model that explains how electrons exists in atoms; composed of oscillating electric and magnetic fields where they oscillate in perpendicular planes. Electromagnetic radiation: a form of energy embodied in oscillating electric and magnetic fields. Electric field: a region of space where an electrically charged particle experiences a force; eg. when another charged particle is into the field of protons, the particle will feel a force. Magnetic field: a region of space where a magnetic particle experiences a force; eg. when two magnets (cid:272)o(cid:373)e i(cid:374)to ea(cid:272)h other"s (cid:373)ag(cid:374)eti(cid:272) field, the (cid:373)ag(cid:374)et (cid:449)ill feel the for(cid:272)e. Amplitude: the vertical height of a crest (or depth of a trough) of a wave a measure of wave intensity. Wavelength (lambda): the distance between adjacent crests of a wave; measured in units such as metres, micrometres, or nanometres (draw diagram for both amplitude and wavelength)