1. Neatly draw the Lewis dot structure. (Must be hand-drawn and very neat) 2. Count and report the number of electron regions around the center atom. 3. Neatly draw the molecule. Include lone pair electrons and use wedges and dotted lines as needed. 4. Report the "electronic geometry" and the "molecular geometry" names. Molecule #1: 13 (note that this -1 anion has one more additional electron) Molecule #2: NH3

1. Draw the best Lewis dot structure for the anion CCI in the correct molecular geometry [Include formal charges and lone pair electrons, and use dashed and solid wedge bonds if necessary 2. How many electron groups are present around the central atom and what is the electron group geometry? 3. What is the molecular geometry and ideal bond angles? 4. Is the molecule polar or nonpolar? If it is polar, draw a dipole moment arrow next to your structure to indicate the directionality of the dipole moment. Answers Edit View Insert Format Tools Table 12ptv Paragaph BIVA 2 Owordh AG3454jpg IMG 3450jpg

Steps for Lewis Structures: 1. Determine the total number of valence electrons. Add electrons for negative charges, subtract electrons for positive charges. 2. Place least electronegative atom (except H) as central atom in structure. 3. Connect atoms by singles bonds. Each single bond = 2 electrons. 4. “Sprinkle” remaining electrons around outside atoms first to complete octets. Don’t use more electrons than the total found in step 1. Then complete the central atom’s octet last if you have enough electrons. 5. Make double or triple bonds as needed to complete octets. 6. Place brackets and charge for ions. For the central atom in each formula, draw the Lewis Structure with all valence electrons shown. 1. PH3 2. H2O 3. CO2 4. CHCl3 5. O2 6. N2 7. CF4 8. C3H8 9. CH3COOH 10. N2O 11. OCN-

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SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. 1. Is it possible for a molecule to be nonpolar even though it contains polar bonds? Explain your answer and give an example.

12. For the following compound, select the total number of hydrogen alloons present in the compound so that each carbon would satisfy the octet rule c-c-c-c Ca A. 12 H atoms B. 10 H atoms C&H atoms D. 6 H atoms

Which statement A-D about VSEPR theory is not correct? Select one: a. The molecular shape or geometry can differ from the electron-pair geometry. b. In VSEPR theory, the shape or geometry of a molecule is determined by electron-electron repulsion. c. The steric number of a central atom is the sum of the number of bonded atoms and lone pairs around the central atom. d. The steric number has five values from 2 to 6. e. Statements A-D are all correct. Clear my choice