Thus each f atom requires one additional electron to

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Unformatted text preview: .................................................................................................................................... between scattering events during the motion of charge EXAMPLE 2.4–3 carriers in response to an external electric field. Describe the valence electron distribution in the covalently bonded F molecule. 2 melt spinning A process of making fibers in which a viscous is 1s of the material passes through a spinnerette The electron configuration for Fmelt2 2s2 2p5. Thus, each F atom requires one additional electron to achieve a filled valence shell. Two F atoms each contribute a single electron to a shared electron with hundreds of holes and turns into a fiber as it cools. pair, forming a single covalent bond. An illustration of the electron distribution for the F2 molecule metal-matrix composites Composites utilizing metals would look like that shown for Cl2 in Figure 2.4–3 except that the covalent bond would involve a pair of electrons from the n matrixrather than from the n 3 shell. as the 2 shell material. ....................................................................................................................................... metallic bonds A type of primary bond formed between two electropositive elements when their average 2.4.3 Metallic Bonding number of valence electrons is less than or equal to 3. Solids composed primarily of electropositive elements containing three or fewer valence metastable state A nonequilibrium state, but one that electrons are generally held together by metallic bonds. As mentioned above, the eleccan persist a a very long time. The by energy has a tropositive elements can obtain forstable electron configuration free“giving up” their valence electrons. Since there are no electronegative the lowest free energy. “extra” local minimum, but is not atoms present to receive the Solution electrons, they are instead donated to the structure in general. That is, they are shared by A shorthand for expressing directions all of the atoms in...
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This note was uploaded on 02/25/2013 for the course PHYS 2202 taught by Professor Sowell during the Spring '10 term at Georgia Tech.

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