2. Visit: https://checkin.ics.uci.edu/https://checkin.ics.uci.edu/ Log in and select Chem 1A. When prompted, type the word of the day: ionic Ensure when asked if you will share your location you select “allow”. Visit: https://learningcatalytics.com/https://learningcatalytics.com/ Sign in MasteringChemistry account name When prompted, type session ID: 89555625 Remember back 5 rows of even side are no seating zones Plan ordering for the day: Finish up periodic trends “exceptions” Review a couple homework problems together Alone “quiz” questions for day. More homework questions Ionic and covalent bonding powerpoint.

3. Carbon, Nitrogen and oxygen Rank in order of effective nuclear charge: Increasing: effective nuclear charge C, N, O Visit: https://checkin.ics.uci.edu/https://checkin.ics.uci.edu/ Word of the day: ionic Ensure when asked if you will share your location you select “allow”. LearningCatalytics: session 89555625

4. Carbon, Nitrogen and oxygen Rank in order of ionization energy: Increasing: effective nuclear charge C, N, O Increasing: ionization energy C, O, N N: [He]2s 2 2p 3 O: [He]2s 2 2p 4 C: [He]2s 2 2p 2 Visit: https://checkin.ics.uci.edu/https://checkin.ics.uci.edu/ Word of the day: ionic Ensure when asked if you will share your location you select “allow”. LearningCatalytics: session 89555625

5. Carbon, Nitrogen and Oxygen Rank in order of electron affinity: Increasing: effective nuclear charge C, N, O Increasing: ionization energy C, O, N Increasing: electron affinity N, C, O N: [He]2s 2 2p 3 O: [He]2s 2 2p 4 C: [He]2s 2 2p 2 Visit: https://checkin.ics.uci.edu/https://checkin.ics.uci.edu/ Word of the day: ionic Ensure when asked if you will share your location you select “allow”. LearningCatalytics: session 89555625

6. Carbon, Nitrogen and oxygen Rank in order of increasing radius: Increasing: effective nuclear charge C, N, O Increasing radius O, N, C Increasing: ionization energy C, O, N Increasing: electron affinity N, C, O N: [He]2s 2 2p 3 O: [He]2s 2 2p 4 C: [He]2s 2 2p 2 Visit: https://checkin.ics.uci.edu/https://checkin.ics.uci.edu/ Word of the day: ionic Ensure when asked if you will share your location you select “allow”. LearningCatalytics: session 89555625

7. Carbon, Nitrogen and oxygen Rank in order of increasing electronegativity Increasing: effective nuclear charge C, N, O Increasing radius O, N, C Increasing: ionization energy C, O, N Increasing: electron affinity N, C, O Increasing electronegativity C,N,O Visit: https://checkin.ics.uci.edu/https://checkin.ics.uci.edu/ Word of the day: ionic Ensure when asked if you will share your location you select “allow”. LearningCatalytics: session 89555625

8. Ionic and Covalent Bonding Including Naming Note: We likely won’t make it to covalent nomenclature, this is the one students find FAR easier than ionic. Please refer to the videos and naming hand out for help with this, and as always office hours, discussions, and facebook for extra help. If you don’t remember it from high school/1P. Visit: https://checkin.ics.uci.edu/https://checkin.ics.uci.edu/ Word of the day: ionic Ensure when asked if you will share your location you select “allow”. LearningCatalytics: session 89555625

9. HOMEWORK REVIEW K +, I - ….Extending, for MgO, how many electrons are traded? one electron traded Mg 2+, O 2- two electrons traded

10. “quiz” question (remember, work alone but use whatever you want to help you) Visit: https://checkin.ics.uci.edu/https://checkin.ics.uci.edu/ Word of the day: ionic Ensure when asked if you will share your location you select “allow”. LearningCatalytics: session 89555625

11. TYPES OF BONDS Ionic: Covalent: Metallic: “trades” electrons Metal and a non-metal (oversimplified definition) “shares” electrons non-metals (oversimplified definition) delocalized electrons metals electrically conductive collective description of many bonds NaCl CO Ag

12. For the Following Choose the Ionic Compounds (based on previous definition) NaCl CH 3 Cl MgCl 2 SO 2 Na 2 SO 3 Visit: https://checkin.ics.uci.edu/https://checkin.ics.uci.edu/ Word of the day: ionic Ensure when asked if you will share your location you select “allow”. LearningCatalytics: session 89555625

13. Visit: https://checkin.ics.uci.edu/https://checkin.ics.uci.edu/ Word of the day: ionic Ensure when asked if you will share your location you select “allow”. LearningCatalytics: session 89555625

14. For the binary ionic compounds in the last slide, decide which has more covalent character. Reminder note from videos (see slides included FYI): Summary of slides: The more polarizing power and polarizability lead to a bond with more covalent character. Small highly charged cations have more polarizing power. Large highly negatively charged anions have more polarizability. NaCl MgCl 2 Anions are the same, this won’t affect covalent character For cations which have more polarizing power? Mg 2+ is smaller with a higher charge, it has more polarizing power. Therefore MgCl 2 has more covalent character. Visit: https://checkin.ics.uci.edu/https://checkin.ics.uci.edu/ Word of the day: ionic Ensure when asked if you will share your location you select “allow”. LearningCatalytics: session 89555625

15. Charge Ion 1 Charge Ion 2 Internuclear radius LATTICE ENERGIES Note: This isn’t and won’t be covered in the videos. You won’t need to do lattice energy problems any more complex than shown in the next couple of slides. We will not be calculating the numbers, this equation will be for illustration purposes only. If internuclear distance increases what happens to energy? If charge increases what happens to energy? increases decreases Not responsible for this quarter! Just FYI if you are interested.

16. Ionic Bond Formation A) Explain why the lattice energy of silver bromide (903 kJ/mol) is greater than that of silver iodide (887 kJ/mol), given that they have a similar arrangement of ions. Hint: How does the charge of Br - and I - compare? Hint: How does the size of Br- and I- compare ? Hint: If two charges are closer together, how is the force required to hold them together affected? They are the same I - is bigger Larger distance= lattice energy. Because the charges are the same, but the internuclear distance is larger for AgI, it must have the smaller lattice energy. Not responsible for this quarter! Just FYI if you are interested.

17. NAMING: IONIC Name the Compounds we identified as ionic on the first problem. NaCl MgCl 2 Na 2 SO 3 Sodium chloride Magnesium chloride Sodium sulfite

18. NAMING: COVALENT Name the Compounds below. SO 2 NO PCl 5 Sulfur dioxide Nitrogen monoxide Phosphorous pentachloride