MO Theory
Inter/Intramolecular Forces
Hybridization
Polarity
VSEPR Theory
100
The bond order for He2^+
What is 1/2?
100
All types of IMFs C2H5OH can have are...
What are Dispersion forces, Dipole-Dipole, and Hydrogen-bonding?
100
The hybridization of the 5th carbon in the compound CH3CHCHCCCH2CHCHCHCH2.
What is sp hybridized? (Triple bond to left and single bond to right)
100
The only polar molecule out of the following: B(OH)3, CH4, HCl, CO2
What is HCl? (B(OH)3 is trigonal planar, CH4 is tetrahedral, and CO2 is linear)
100
The molecular geometry of SF4.
What is see-saw?
200
The MO configuration for N2.
What is sigma1s2 sigma1s2* sigma2s2 sigma2s2* pi2p4 sigma2p2 (Filled 1s and 2s MOs with the pi 2p lower in energy than sigma 2p. All bonding MO's in 2p filled. No anti-bonding 2p electrons.)
200
The following molecules ranked in order of decreasing viscosity: CH2(OH)CH2(OH), CH2OHCHOHCHOH, H2O
What is CH2OHCHOHCHOH < CH2(OH)CH2(OH) < H20?? (Large and highly branched w/ more H-bonding)
200
The bond that is not found in C2H5OH: A: sigma (1s-sp3) B: sigma (sp3-sp2) C: sigma (sp3-sp3) D: None of the above
What is B sigma (sp3-sp2)? (There are no sp2 hybridized atoms)
200
The only non-polar molecule out of the following: H2S, NH3, CH5OH, I3-, HCN
What is I3-? (Lone pairs are equatorial and iodines are axial/linear)
200
The angles between the lone pairs of the central iodine in triiodide.
What is 120 degrees?
300
The amount of bonding molecular orbitals you would expect for diiodine.
What is 27 molecular orbitals?
300
The highest boiling point in each pair of molecules: 1. CH3 and NH3 2. SiO2 and CO2 3. BCl3 and BBr3 4. H2S and H2O
What is: 1. NH3 (H-Bonding) 2. SiO2 (Network Solid) 3. BBr3 (Larger; more polarizable; greater IMFs) 4. H2O (Greater difference in E.N.; larger dipole moment)
300
The hybridization on each atom in N2O and the number of p-orbitals taking place in a pi-bond for each.
What are both nitrogens sp hybridized and oxygen sp3 hybridized with two p-orbitals from each nitrogen forming two pi bonds? (2 sigma and 2 pi-bonds in molecule)
300
The only molecule of the following with a net dipole moment looks like.... CS2, PF5, AlH3, CH2O
What is CH2O where the dipole moment goes through the middle of the molecule, pointing from the hydrogen side of the molecule and towards the oxygen? (Geometry is trigonal planar; double bond between C and O)
300
The number of pi bonds in NCCHNH.
What is 3 pi bonds? (Triple bond between terminal NC and double bond between second C and N)
400
The MO diagram for C2^3-, the bond order, and whether it is para or diamagnetic.
What is filled 1s and 2s orbitals, filled 2p pi and 2 p sigma (pi lower in energy) with one extra lone electron in 2p pi antibonding? What is paramagnetic? BO=5/2
400
The strongest forces in each of the following molecules: 1. SiC 2. K2CO3 3. Hg 4. CH3OCH3 5. AsCl3 6. CH2C(OH)CH3
What is: 1. Network Covalent 2. Ionic Solid 3. Metallic 4. Dispersion 5. Dipole-Dipole 6. Hydrogen Bonding
400
The hybridization of the molecule for the carbonate anion looks like this:
What is trigonal planar arrangement of sp2 orbitals of carbon w/ sigma bonds to oxygen's orbitals (Oxygen's are sp3, sp3, and sp2). Extra p-orbital on carbon pi-bonds w/ extra p-orbital on sp2 oxygen. (Total 3 sigma bonds and one pi bond)
400
The most polar molecule in each of the following pairs: (Don't think about IMFs, just electronegativity differences) 1. HCl and HI 2. C2HBr and C2HCl 3. CH3OH and CH3OCH3 4. CO and NO
What are: 1. HCl (Cl is more EN than I, although very similar) 2. C2HCl (Cl is more EN than Br, also very similar) 3. CH3OH (Terminal OH-group vs. centered molecule) 4. CO (C is less EN; larger difference w/ highly EN oxygen)
400
A molecule with one central atom and two bonded atoms with a bond angle of approximately 105 degrees has this many lone electron pairs.
What is 2 lone pairs? (Tetrahedral electronic geometry; Bent molecular geometry)
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