1. 7th inning stretch PCl3 2. SCl2 3. CS2 4. CH4
Draw the Lewis structure for each:
PCl3
2. SCl2
3. CS2
4. CH4

2. 7th inning stretch PCl3 2. SCl2 3. CS2 4. CH4
Draw the Lewis structure for each:
PCl3
2. SCl2
3. CS2
4. CH4

3. The lewis structure of water:
unshared e- .. : H 2
X 1e-
=2e- __
O H H O
Shared e- 1
X 6e-
=6e-
Total
8e-
- 4e- bonded
4 e-
Water has 2 shared & 2 unshared pairs of e-

4. - +
What did you observe?

5. e- move towards the protons

6. What holds electrons in an atom?

7. e- like protons

8. Do electrons like each other electrons?

9. NO

10. - -
What did you observe between the electrons?

11. e- Repel
e- move as far away from each other…..

12. However, they do exist in pairs (remember two per e- cloud shape)

13. Draw the following table:V S E P R
THEORY
Draw the following table:
# of Total Pairs
# Shared e- Pairs
# Unshared e- Pairs
Shape
Picture
Examples

14. V S E P R linear 2 2 0 Trigonal Planar 3 3 0 4 3 1 Pyramidal 4 4 0
THEORY
# of Total Pairs
# Share e- Pairs
# Unshared e- Pairs
Shape
Picture
Examples
linear
CO2
Cl2
Trigonal
Planar
BCl3
CH2O
NH3
PCl3
Pyramidal
CH4
CBr4
Tetrahedral
SCl2
H2O
Bent

15. Pyramidal

16. Bent

17. Molecule Phet

18. CO2 CaCl2 NH4Cl Li2SO4 Which is a molecule?
Make sure to ask :How did you decide?
A because it has only non-metals; Remind students that ionic compounds made of metals-nonmetals or polyatomic ions are not.

19. 2. Which would have a linear shape?
HBr
CO2
Both are linear C

20. 3. Which has only single bonds?
HBr
CO2
Both have all single bonds A

21. 4. What shape is water?
Tetrahedral
Bent
Trigonal planar
Linear B

22. 5. Which is an example of an exception to the octet rule?
BF3 I2
More than one of these
Make sure to ask :How did you decide? C

23. 5ans. Which is an example of an exception to the octet rule?
BF3 I2
More than one of these
Make sure to ask :How did you decide? C

24. 6. Which molecule could be represented with this diagram?
BH3
CH4
NH3 C

25. 7. Which molecule could be represented with this diagram?
HCl
CH4
NH3 F2 A