Question

DATA SHEET 7.1 cm Data Analysis and Calculations PART A Deriving a 3-D Molecular structu Deriving a 3-D Molecular Structure from the 2-0 Lewis Strue Carbon Tetrachloride, CA Lewis Structure Number of Valence Electrons Steric Number of Central Atom Electron Group Geometry Molecular Geometry Bond Angle(s) Polar? (If yes, show dipole.on 3-D structure)

Answer 1

1. carbon atom have four valence electrons, and each chlorine atoms have seven valence electrons and there are 4 chlrone atoms. Hence, the no.of valence electrons for CC14 4+ (4 x 7) = 32 2. Steric number = carbon has 4 sigma bond with 4 C1 atom and no lone pair hence steric number is 4 3. Electronic Geometry : 4+0 = sp3 hence tetrahedra 4. Molecular geometry: since it has no lone pair hence its molecular geometry is also tetraheral 5. bond angle is approximately 1090 for tetrahedral geometry 6. The four chlorine atoms in CC14 are polar, but overall the molecule will be nonpolar since the bond polarity is getting cancelled by opposite and symmetric tetrahedral shape Lewis structure for CC14 :01: :01:0:01: