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- 1. Multiple ChoiceWhat is the VSEPR theory used to predict?Bond StrengthPolarityMolecular ShapeElectronegativity
- 2. Multiple ChoiceWhich of the following shapes has an unshared pairs of electrons on the central atom?BipyramidalBentTrigonal PlanarTetrahedral
- 3. Multiple Choice
Which molecule would have this molecular geometry?
BF3
CH4
PCl5
CO2
- 4. Multiple ChoiceWho could this molecule be?CH4CO2PCl5BF3
- 5. Multiple ChoiceWho could this be?CO2NH3H2SCH4
- 6. Multiple Choice
Is this molecule polar?
Yes
No
- 7. Multiple Choice
Is this molecule polar?
No, there are four things around the central atom.
Yes, the dipole moment (+-->)would point to the purple area that represents the unbonded pair of electrons.
- 8. Multiple ChoiceWhat is the the shape of this molecule according to VSPER theory?LinearTetrahedralTrigonal PlanarTrigonal pyramidal
- 9. Multiple ChoiceChoose the correct shape for this molecule:Trigonal planarTrigonal pyramidalTetrahedralLinear
- 10. Multiple Choice
Bond angle for bent. Look at your second reference chart.
120o
109.5o
104.5o
107o
- 11. Multiple ChoicePi bonds are formed byside to side overlap of s orbitalsend to end overlap of s orbitalsside to side overlap of p orbitalsend to end overlap of p orbitals
- 12. Multiple ChoiceHow many sigma and pi bonds does this have?1 sigma and 1 pi2 sigma and 1 pi1 sigma and 2 pi2 sigma and 2 pi
- 13. Multiple ChoiceHow many sigma and pi bonds does this have?3 sigma and 2 pi5 sigma and 5 pi5 sigma and 0 pi0 sigma and 5 pi
- 14. Multiple ChoiceHow many pi bonds are there in a single bond?0123
- 15. Multiple Choice
How many sigma bonds are in the following molecule?
0
1
2
3
- 16. Multiple Choice
How many pi bonds are in the following compound?
0
1
2
3
- 17. Multiple Choice
What is the hybridization of a linear molecule? Count the bonds and then figure out which hybrid gives you the same number of bonds.
sp
sp2
sp3
sp3d
- 18. Multiple Choice
Which of the following bonds is least polar?
C--O
O--H
S--Cl
Br--Br
I--F
- 19. Multiple Choice
Which of the following molecules has a dipole moment? Remember that is when the molecule is polar. Write out the Lewis Dot and/or draw the 3D shape to figure this out.
CO2
SO2
CH4
I2
none of these
- 20. Multiple Choice
Of the following, which molecule has the largest bond angle based on their geometry and how far apart the attached atoms are?
O3
OF2
HCN
H2O
more than one of these has equally large bond angles
- 21. Multiple ChoiceWhat is the shape of this molecule?Linearbenttetrahedraltrigonal planar
- 22. Multiple ChoiceWhat is the shape of this molecule?LinearBentTetrahedralTrigonal Pyramidal
- 23. Multiple ChoiceWhat is the shape of this molecule?LinearBentTetrahedralTrigonal Planar
- 24. Multiple ChoiceThree pairs of electrons are shared in aSingle bondDouble bondTriple bond
- 25. Multiple Choice
tetra
six
Four
Five
seven
- 26. Multiple ChoiceBond angle for tetrahedral120o109.5o104.5o107o
- 27. Multiple ChoiceBond angle for trigonal planar120o109.5o104.5o107o
- 28. Multiple ChoiceBond angle for linear120o109.5o180o107o
- 29. Multiple Choice
Does this molecule have polar bonds? Is the whole thing polar?
Yes. No.
Yes. Yes.
No. Yes.
No. No.
- 30. Multiple Choice
Is this polar?
No
Yes, and you draw the dipole moment pointing toward the orange balls.
Yes, and you draw the dipole moment pointing toward the purple areas.
I can't tell because there are no atoms.
- 31. Multiple Choice
IS this polar?
No, there are 4 atoms attached.
Yes, and you draw the dipole moment pointing toward the hydrogens because they are positive.
Yes, and you draw the dipole moment toward the fluorine because it is very electronegative.
- 32. Multiple Choice
Is this molecule polar?
Yes, and you draw the dipole moment pointing between the white balls, the hydrogens.
Yes, and you draw the dipole moment pointing between the green atoms, the fluorines.
No, there are 4 atoms attached.
- 33. Multiple Choice
Is this molecule polar?
No, there are 4 atoms attached.
Yes, and you draw the dipolement pointing toward the hydrogen.
Yes, and you draw the dipole moment pointing in the middle of the bromines because they are more electronegative.
- 34. Multiple Choice
In the middle is carbon. Is this molecule polar?
Yes, and you draw the arrow (dipole moment) pointing between the Br because Br is more electronegative.
Yes, and you draw the arrow (dipole moment) between a F and a Br to balance it out.
Yes, and you draw the arrow (dipole moment) pointing between the Fs because F is more electronegative.
No, there are 4 atoms attached and they are all very electronegative.
- 35. Multiple Choice
What ways can you make a sigma bond? Click all that apply.
S orbital to S orbital
P orbital straight on to P orbital straight on
P orbital parallel to P orbital
S orbital to P orbital head on
- 36. Multiple Choice
What is the strongest bond type?
sigma
Pi
- 37. Multiple ChoiceHow many resonance structures for NO3- ion?1234
- 38. Multiple ChoiceWhat is the bond strength between N and O?N-O (Single bond)N=O (double bond)N Ξ O (Triple bond)N-O (between single and double bond)
- 39. Multiple ChoiceHow many resonance structure for SO2 ?1234
- 40. Multiple ChoiceWhat is the bond strength between S and O?11.523
- 41. Multiple Choice
What is the picture showing?
All of the resonance structures for carbonate.
The formal charge on each atom in carbonate.
The electronegativity for carbonate.
The ionization energy for carbonate.
- 42. Multiple Choice
Does this compound have a dipole moment?
Yes
No
- 43. Multiple Choice
A nonpolar compound can only contain nonpolar bonds.
True
False
- 44. Multiple Choice
We want to write the Lewis Diagram for the compound ClO3- (chlorine and oxygen). How many valence electrons are in this compound?
28
26
27
25
- 45. Multiple Choice
molecule in which opposite ends have opposite electric charges
cohesion
nonpolar molecule
solution
polar molecule
- 46. Multiple Choice
Opposite electrically charged areas _______________.
repel each other
attract each other
- 47. Multiple Choice
A molecular geometry with 2 lone pairs and 2 bonding pairs is
Tetrahedral
Trigonal pyramidal
Bent
Linear
- 48. Multiple ChoiceBr & BrIonicPolar CovalentNonpolar Covalent
- 49. Multiple Choice
The two (2) factors that determine if a molecule is Polar or Non-polar:
The atoms's ionization energy
the type of atoms in the molecule
The atom's oxidation number
the shape of the molecule
- 50. Multiple ChoiceDefine electronegativityability to donate electrontendency to lose electrontendency to lose electron to its neighbortendency of atom to attract shared electron to itself
- 51. Multiple ChoiceH2O is polar. Which statement is FALSE?Dipole moment is formedPartial separation of chargesNet dipole momentDipole moment cancel out each other
- 52. Multiple ChoiceCCl4 has polar bonds but is a non polar molecule. Why?bond polarity exist between atomsbond polarity between atoms canceldipole moment exist between atoms in moleculedifference in EN between C and Cl
- 53. Multiple Choice
When you draw the direction of the dipole moment for the whole molecule (+-->) you draw the arrow pointing to what side?
The negative end of the molecule
The positive end of the molecule.
The middle of the molecule.
- 54. Multiple ChoiceIn this Lewis structure, the symbol above F means...electrons are being transferred to Fluorineelectrons are less attracted to F than Helectrons are more attracted to F than HFluorine has formed a cation
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