How many sigma and pi bonds are in the molecule pictured below? H H H a. five sigma bonds and eleven pi bonds b. thirteen sigma bonds and two pi bonds Oc. eleven sigma bonds and two pi bonds Od. thirteen sigma bonds and one pi bond e. eleven sigma bonds and five pi bonds

Effect of Differences in Electronegativity on Molecular Polarity For each molecule: Sketch each molecule as shown in the simulation. Include arrows to show the bond dipoles as well as a molecular dipole (if present). Circle polar or nonpolar to indicate the polarity of the molecule. Fill in the electronegativity values for each atom C. Oz vs HF O2 HF polar Electronegativity nonpolar polar nonpolar H=D F = Question 2a: Both of these molecules have the same molecular geometry; they are linear. How do differences in electronegativity affect the molecular polarity in linear molecules? Page 8 of 9 CHM CZ1 ONL Genmetru chrt p-ts voih 1032 Corvrinht e 2020-2021 B CSI A

Give the correct electron and molecular geometries that correspond to each set of electron groups around the central atom of a molecule.a. four electron groups overall; three bonding groups and one lone pairb. four electron groups overall; two bonding groups and two lone pairsc. five electron groups overall; four bonding groups and one lone paird. five electron groups overall; three bonding groups and two lone pairse. five electron groups overall; two bonding groups and three lone pairsf. six electron groups overall; five bonding groups and one lone pairg. six electron groups overall; four bonding groups and two lone pairs

Imagine a molecule XY₂ where element X has 4 valence electrons and element Y has 6 valence electrons. What is the molecular shape around X? O Linear Bent Trigonal planar O Trigonal pyramidal Tetrahedral How many sigma and pi bonds are in the Lewis structure for the molecule XY₂? one sigma and three pi bonds two sigma and two pi bonds three sigma and one pi bonds four sigma and zero pi bonds

- Complete the table. Number of electron groups Bond angle Outer atoms/Lone pairs 2 ? 2/0 3 4 ? ? bond angle in a two electron group molecule: bond angle in a three electron group molecule: bond angle in a four electron group molecule: 3/0 2/1 4/0 3/1 2/2 Shape ? trigonal planar (planar triangular) ? tetrahedral ? bent The shape of a two electron group molecule is The shape of a three electron group molecule with two outer atoms and one lone pair is The shape of a four electron group molecule with three outer atoms and one lone pair is

Chemical formula & total valence e- PCI Electron Group Geom. Bond Bond Polarity Molecule Lewis Structure Model Sketch & Molec. Geom. Angle (show calc) Polarity CH4 SiO CH,0

Chemical Valence Formula Electrons 16. H₂S 17. PF3 18. CO₂ 19. NH₂* H: S: Total: P: F: Total: C: O: Total: N: H: Total: Lewis Structure Diagram VSEPR Structure Diagram Electronegativities H: S: ΔΕΝ: P: F: ΔΕΝ: C: O: AEN: N: H: AEN: Bond and Molecule Polarity and Intermolecular Forces Polar Bonds? Polar Molecule? Strongest IMF? Polar Bonds? Polar Molecule? Strongest IMF? Polar Bonds? Polar Molecule? Strongest IMF? Polar Bonds? Polar Molecule? Strongest IMF?

Consider the molecule thiophene, C4H4S How many л bonds are there? H. H -S C- C-H C H

9. Determining Molecular Polarity NH, H,O CH, CH,F HCI Br BeF, BH, BHF, BEHF Struc. Form.. Н-C Molecule Linear Shape Bond 8+. 8- Polarity H-CI 2.1 3.0 Polar Molec. 8- H-Cl Polarity. Polar Polar Bond-a bond between 2 elements with UNEQUAL electron distribution. Polar Molecnle-a molecule that has UNEQUAL electron distribution over the whole molecnle

What is the molecular geometry if you have a double bond, a single bond and 1 lone pair around the central atom?