Isotactic or syndiotactic polymers often more attractive for materials development. Concept introduction: An isotactic polymer is compound that is formed by the arrangement of monomers in the same pattern of its chain backbone. It indicates that all groups attached to carbon atom are pointing towards backward. Vinyl chloride follows the same sequence while forming the polymer and produces the isotactic PVC. A sydiotactic is the direction of adjacent molecules alternatively arranged (backward and front) to form a polymer.

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12. Which best explains why an aluminum can may be crushed without it breaking into pieces? (A) Aluminum has ionic bonds that are not easily broken. (B) Aluminum has covalent bonds that are not easily broken. (C) Aluminum has localized valence electrons with direc- tional bonding. (D) Aluminum has delocalized valence electrons with nondi- rectional bonding. 13. Which of the following is true for a solid with a structure as shown in the diagram below? 6+ 8-6+ 8-6+ 8-6+ 8-6+ 8-6+ 8- 8- 6+68+68+68+68+68+ 6+ 8-6+ 8-6+ 8-6+ 8-6+ 8-6+ 8- 8-88-8+68+68+68+68+ (A) It is an atomic solid and consists of atoms with electro- static attractions. (B) It is an ionic solid and consists of ions held together by electrostatic attractions. (C) It is a molecular solid and consists of polar molecules with dipole-dipole attractions. (D) It is a molecular solid and consists of nonpolar mol- ecules with intermolecular forces. 14. Which of these correctly matches the molecular compound with the most important…

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Chapter 8, Problem 8.58PAE

Interpretation Introduction

Interpretation:

Isotactic or syndiotactic polymers often more attractive for materials development.

Concept introduction:

An isotactic polymer is compound that is formed by the arrangement of monomers in the same pattern of its chain backbone. It indicates that all groups attached to carbon atom are pointing towards backward. Vinyl chloride follows the same sequence while forming the polymer and produces the isotactic PVC. A sydiotactic is the direction of adjacent molecules alternatively arranged (backward and front) to form a polymer.

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