Question

the image shows an exotic automobile made with extensive use of carbon fiber, and a partial lewis structure for polyacrylonitrile with two specific carbon atoms indicated. carbon fiber is used as a very strong and lightweight material in a variety of technical applications, including the manufacture of exotic automobiles. much of the carbon fiber for such applications is made from the polymer polyacrylonitrile, for which a partial lewis structure is shown. what are the two molecular geometries around the two carbon atoms indicated in the lewis structure as carbon 1 and carbon 2? carbon 1 = trigonal planar, carbon 2 = linear carbon 1 = trigonal planar, carbon 2 = bent carbon 1 = tetrahedral, carbon 2 = linear carbon 1 = tetrahedral, carbon 2 = bent dont test me yet, i am trying to gain an understanding before attempting to answer this question.

Explanation:

Step1: Analyze carbon 1 bonding

Carbon 1 has 3 regions of electron - density (double - bond to nitrogen and single - bonds to two other carbons). According to VSEPR theory, 3 regions of electron - density result in a trigonal planar geometry.

Step2: Analyze carbon 2 bonding

Carbon 2 has 2 regions of electron - density (a double - bond and a single - bond). According to VSEPR theory, 2 regions of electron - density result in a linear geometry.

Answer:

carbon 1 = trigonal planar, carbon 2 = linear