99 22202 34 se 7896 v v deformation up to this point

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Unformatted text preview: ction so62theEu Gd is Tb Dy Ho 68 strain 65 66 67 Er also uniform. *Lanthanides Ce Pr Nd Pm (Rare Earths) 140.12 140.91 144.24 (144.91) Sm 151.97 157.25 158.93 162.50 164.94 167.26 150.36 unit cell The smallest representation of a material. In 90 91 92 93 94 96 97 98 99 100 95 crystals the unit Pa is the smallest patterned collection Fm cell U Np Pu Am Cm Bk Cf Es **Actinides Th 232.04 (231.04) (238.05) (237.05) (244.06) (243.06) (247.07) (247.07) (242.06) (252.08) (257.10) of atoms or ions that repeats in space. FIGURE 2.2–3 The periodic table of the elements. vacancy A missing atom or ion at a lattice site that Another less abstract consequence of QMT is a rational explanation of the periodic would normally be originally developed on the basis of experimental table of the elements, which was occupied. observations (see Figure 2.2–3).The elements were placedelectron band that is The highest-energy in order of increasing atomic valence band number and arranged in a series of vertical columns, or groups, so that all the elements at least partially filled at 0 K. in a group display similar chemical properties. An explanation for the regularity of atomic properties within a group is obtainedElectrons located in the shell that is from the electron configurations of the elements. valence electrons Elements within a group have the same number of electrons in their outer, or valence, furthest from the atomic nucleus. shells that participate most strongly in chemical reactions. van der Waals bond A type of secondary bond in ....................................................................................................................................... which a temporary dipole induces another dipole in an EXAMPLE 2.2–1 Determineadjacent atom. The twoa dipoles then experience a the electron configurations for silicon atom Z 14 and a germanium atom Z 32 . coulombic forceelements display similar characteristics. Explain why these two of attraction. Solution viscoelastic deformation A com...
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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 Institute of Technology.

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