AP MCQ 02ABCDEFG PART 1 Question 01: Which atom geometry is associated with sp3 hybridization? Trigonal pyramidal Trigonal planar Octahedral Linear Question 02: What is the total number of LONE pairs of electrons, in the complete Lewis diagram for SF6? 0 6 18 36 Question 03: Which one of the following covalent bonds would be the most polar? H-H O=O O-H F-H Question 04: Which of these cations has the ability to polarize an anion to the greatest extent? Na+ Ba2+ Al3+ K+ Question 05: Which of these molecules is polar (i.e., has a dipole moment)? SF6 NH3 CO2 BeCl2 Question 06: A hydrogen molecule H2, will form from two hydrogen atoms at what point? When the atoms are far apart to minimize repulsion When the atoms are close together to maximize attraction When the potential energy of the two atom system is at a minimum Hydrogen atoms do not form molecules Question 07: The presence of pi bonds in a species may introduce the possibility of each of the following phenomena, EXCEPT Resonance cis/trans isomerism A double bond Hybridization Question 08: Ionic solids are brittle. Cleavage of the solid is most likely to happen when? When the positive and negative ions are adjacent to one another When ions of the same charge are adjacent to one another When the covalent bonds are broken When the intermolecular forces are weakest Question 09: How many electron density domains would you expect around the S atom, in SF5-? 5 6 7 8 Question 10: Which of the following molecules is linear in terms of its atom geometry? O3 CH4 BCl3 CO2 Question 11: Which atom geometry is associated with sp hybridization? Octahedral Trigonal planar Linear Trigonal pyramidal Question 12: Which of the following pairs of species have the same atomic geometry? H2O and HF SF6 and PF5 NH3 and PF3 NH3 and BF3 Question 13: A molecule with trigonal pyramidal atom geometry, has what shape in terms of electron domains? Trigonal pyramidal Trigoanl planar Tetrahedral T-shaped Question 14: What two bond angles for F-S-F, occur in the molecule SF6? 90 and 180 degrees 90 and 120 degrees 60 and 90 degrees 90 and 109.5 degrees Question 15: A molecule with a central atom with six electron density domains around it could have which atom geometry? T-shaped Tetrahedral See-saw Square based pyramid Question 16: Which of the following pairs are the two items correctly related? T-shaped and ClF3 Tetrahedral and SeF4 Linear and O3 Hexagonal and SF6 Question 17: How many possible resonance structures can be drawn for the SO2 molecule? 0 1 2 3 Question 18: How many valence electrons are there in the carbonate ion, CO32-? 20 22 24 26 Question 19: Which combination of metals is most likely to form an interstitial alloy? One with metal A (atomic radius 165 pm) and metal B (atomic radius 161 pm) One with metal A (atomic radius 225 pm) and metal B (atomic radius 223 pm) One with metal A (atomic radius 200 pm) and metal B (atomic radius 70 pm) One with metal A (atomic radius 193 pm) and metal B (atomic radius 188 pm) Question 20: sp hybridization around a central atom is associated with what bond angle around the same atom? 90° 109.5° 120° 180° Question 21: In which of the following species would one expect to find a pi bond? CH4 C2H4 C2H6 H2 Question 22: The three bonds between the C atom, and the three O atoms in the carbonate ion (CO32-) are found to have identical bond strengths, and the bond lengths to one another. Which phenomenon best explains this observation? Resonance Hybridization pi bonding Formal charge Question 23: Which of the following ionic compounds would be expected to have the greatest degree of covalent character? NaCl KCl CaCl2 BeCl2 Question 24: Which of the following covalent molecules would one expect to have the greatest degree of ionic character? H2 O2 HCl HI Question 25: What phenomenom accounts for the fact that the carbonate ion exhibits carbon-oxygen bond lengths that are intermediate in length and strength, between a single carbon-oxygen bond, and a double carbon-oxygen bond? Resonance Hybridization Disproportionation Polarization Δ