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• Visit: 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/

• 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.

https://checkin.ics.uci.edu/


https://learningcatalytics.com/

• Carbon, Nitrogen and oxygen

Rank in order of effective nuclear charge:

Increasing: effective nuclear charge

C, N, O

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Rank in order of ionization energy:Increasing: effective nuclear charge

C, N, O

Increasing: ionization energy

C, O, N

N: [He]2s22p3

O: [He]2s22p4

C: [He]2s22p2




• Carbon, Nitrogen and Oxygen

Rank in order of electron affinity:Increasing: effective nuclear charge

C, N, O


C, O, N

Increasing: electron affinity

N, C, ON: [He]2s22p3

O: [He]2s22p4

C: [He]2s22p2





Rank in order of increasing radius: Increasing: effective nuclear charge

C, N, O

Increasing radius

O, N, C


C, O, N


N, C, ON: [He]2s22p3

O: [He]2s22p4

C: [He]2s22p2





Rank in order of increasing electronegativityIncreasing: effective nuclear charge

C, N, O

Increasing radius

O, N, C


C, O, N


N, C, O

Increasing electronegativity

C,N,OVisit: https://checkin.ics.uci.edu/

• Word of the day: ionicEnsure when asked if you will share your location you select “allow”.



Ionic and Covalent BondingIncluding 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.




HOMEWORK REVIEW

K+, I-

….Extending, for MgO, how many electrons are traded?

one electron traded

Mg2+, O2- two electrons traded

“quiz” question (remember, work alone but use whatever you want to help you)




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

For the Following Choose the Ionic Compounds

(based on previous definition)

•NaCl

•CH3Cl

•MgCl2

•SO2

•Na2SO3




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 MgCl2Anions are the same, this won’t

affect covalent character

For cations which have more polarizing power?

Mg2+ is smaller with a higher charge, it has more polarizing power.

Therefore MgCl2 has more covalent character.




NAMING: IONIC• Name the Compounds we identified as ionic

on the first problem.

•NaCl

•MgCl2

•Na2SO3

Sodium chloride

Magnesium chloride

Sodium sulfite

NAMING: COVALENT• Name the Compounds below.

• SO2

•NO

• PCl5

Sulfur dioxide

Nitrogen monoxide

Phosphorous pentachloride

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