CHEM 219 Module 1 Problem Set: Principles of Organic Chemistry with Lab FALL 2023 Portage learning

On a piece of scratch paper, write out the Lewis Dot Diagram for each of the indicated elements and determine the following for each: a) The number of Lone Pairs the atom possesses in its valence shell. b) The number of Unpaired Electrons the atom possesses in its valence shell. c) The number of bonds the atom will form. 1. Oxygen 2. Carbon 3. Hydrogen 4. Nitrogen 1. O 2. Two lone pairs 3. Two unpaired electrons 4. two bonds 12/14/23, 8:42 PM Module 1 Problem Set: Principles of Organic Chemistry with Lab-2021-Gallaher 2. C 3. Zero lone pairs 4. Four unpaired electrons 5. four bonds 3. H 4. Zero lone pairs 5. One unpaired electron 6. one bond 4. N 5. One lone pair 6. three unpaired electrons 7. three bonds Answer: Oxygen – a) 2 b) 2 c) 2 Carbon – a) 0 b) 4 c) 4 Hydrogen- a) 0 b) 1 c) 1 Nitrogen – a) 1 b) 3 c) 3 Ques 0 / 0 pts tion 2 Classify the bonding between the given pairs of atoms as ionic, covalent, or polar covalent. Use the table of electronegativities shown below to help with the classification. 12/14/23, 8:42 PM Module 1 Problem Set: Principles of Organic Chemistry with Lab-2021-Gallaher Your Answer: a. Br and Br b. K and Cl c. P and Cl d. C and O e. Na and Br a. covalent b. Ionic c. covalent d. polar covalent e. ionic Answer: a. Br-Br: Electronegativity difference ( ) = 0 = COVALENT (or pure covalent) b. K-Cl: ( ) = 2.2 = IONIC c. P-Cl: ( )= 0.9 = POLAR COVALENT d. C-O: ( )= 1.0 = POLAR COVALENT e. Na-Br: ( ) = 1.8 = POLAR COVALENT