first thing: please be ready with iclickers out, everything else put away. (candy/toothpicks can...
TRANSCRIPT
First thing: Please be Ready with iclickers out, everything else put away. (Candy/Toothpicks can stay
out)
For Credit iClicker QuizOpen Note:
You may not use: Phones, books, ipads, computers or your neighbor
• Given the structure of OF2 answer the
following questions:
• 1) What is the coordination number of O?• A) 2 B) 3 C) 4 D) 5 E) 6
• 2) What is the steric number of O?
• A) 2 B) 3 C) 4 D) 5 E) 6
• Visit: https://checkin.ics.uci.edu/
• Log in and select Chem 1A.
• When prompted, type the word of the day: vsepr
• 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: NO LEARNING CATALYTICS
Please turn off all downloads. You can usually pause them by clicking on them and clicking pause. Facebook and youtube are officially banned during class time
(this is not me micromanaging, it’s a legit internet issue as told to me by OIT).
Remember back 5 rows of even side
are no seating zones
Visit: https://checkin.ics.uci.edu/ Word of the day: vseprEnsure when asked if you will share your location you select “allow”.
LearningCatalytics: session ID: NONE TODAY.
SOME DEFINITIONS• STERIC NUMBER: # BONDS+# ELECTRON PAIRS
• COORDINATION NUMBER: NUMBER OF BONDED ATOMS Steric #: 4
Coord. #:3
Steric #: 5Coord. #:5
Steric #: 6Coord. #:5
Visit: https://checkin.ics.uci.edu/ : vseprEnsure when asked if you will share your location you select “allow”.
LearningCatalytics: session ID: NONE TODAY.
SOME (MORE) DEFINITIONS• ELECTRON GEOMETRY: GEOMETRY INCLUDING IF YOU “SAW”
ELECTRON PAIRS
• MOLECULAR GEOMETRY: GEOMETRY WHERE YOU DON’T “SEE” ELECTRON PAIRS
• BOND ANGLE: ANGLE BETWEEN BONDS. EG:TetrahedralMG: Trig. pyramidal
EG:OctahedralMG: Square Pyramidal
EG:Trig. bipyramidalMG: Trig. bipyramidal
Visit: https://checkin.ics.uci.edu/ : vseprEnsure when asked if you will share your location you select “allow”.
LearningCatalytics: session ID: NONE TODAY.
PULL OUT YOUR WORKSHEET, CANDY AND TOOTHPICKS!
Thanks to http://www.chemmybear.com/shapes.html for all animations on following slides!
Visit: https://checkin.ics.uci.edu/ : vseprEnsure when asked if you will share your location you select “allow”.
LearningCatalytics: session ID: NONE TODAY.
STERIC NUMBER 2
Linear
Linear
180°
Visit: https://checkin.ics.uci.edu/ : vseprEnsure when asked if you will share your location you select “allow”.
LearningCatalytics: session ID: NONE TODAY.
STERIC NUMBER 3
Examples:SO3, BF3, CO3
2-
Examples:SO2, CCl2
Trigonal Planar
120°
Trigonal Planar
Bent
<120°
Trigonal Planar
Visit: https://checkin.ics.uci.edu/ : vseprEnsure when asked if you will share your location you select “allow”.
LearningCatalytics: session ID: NONE TODAY.
STERIC NUMBER 4
Examples:CH4, SiH4, PO4
Examples:NH3, PI3
Examples:H2O, OF2
Tetrahedral
109.5°
Trigonal Pyramidal
<109.5°
Tetrahedral
Tetrahedral Tetrahedral
Bent
<109.5° and <AX3E
Visit: https://checkin.ics.uci.edu/ : vseprEnsure when asked if you will share your location you select “allow”.
LearningCatalytics: session ID: NONE TODAY.
STERIC NUMBER 5
Examples:PCl5, SbF5
Examples:TeCl4, SF4
Examples:ClF3, SeO3
2-
Examples:I3-, XeF2
Trig. Bipyramidal
90°, 120°
Trig. Bipyramidal
Trig. Bipyramidal Trig. Bipyramidal Trig. Bipyramidal
See-saw
<90°, <120° <90° 180°
T-shaped linear
Visit: https://checkin.ics.uci.edu/ : vseprEnsure when asked if you will share your location you select “allow”.
LearningCatalytics: session ID: NONE TODAY.
STERIC NUMBER 6
Examples:SF6, Mo(CO)6
Examples:IF5, BrF5
Examples:XeF4, ClF4
-
Octahedral
90°
Octahedral Square Pyramidal
<90° 90°
Square planar
Octahedral Octahedral
Visit: https://checkin.ics.uci.edu/ : vseprEnsure when asked if you will share your location you select “allow”.
LearningCatalytics: session ID: NONE TODAY.