CHEM101 Lecture Notes - Lecture 4: Electromagnetic Radiation, Covalent Bond, Black-Body Radiation

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CHEM101 Full Course Notes
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CHEM101 Full Course Notes
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It is crucial to understand how the electrons are arranged in an atom because: The electron because it takes part in bonding, especially in covalent bond formation. Electromagnetic radiation is a form of energy transmission in which both electric and magnetic fields are propagated in the form of waves. Some examples: radio waves, microwave, light, x-ray are electromagnetic waves. Frequency ( , greek nu) is the number of cycles the wave undergoes per second. It has a unit of per second (s-1) or called hertz (hz) Wavelength ( , greek lambda) is the distance of one cycle of the wave. It has a unit in meters (m) or very often in nanometers (nm, 10-9 m) or angstroms ( , 10-10m) x-rays, radio waves, uv rays, infrared, etc frequency = cycles second wavelength = distance cycles. The speed of a wave (c) is the distance traveled per unit time by that wave.

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