Chem 7.r
A. NCl₃, PF₃, OCl₂
Choose the answer that contains all of the molecules from this list that are polar and none that are nonpolar. BF₃ NCl₃ CBr₄ PF₃ OCl₂ A. NCl₃, PF₃, OCl₂ B. BF₃, NCl₃, CBr₄ C. CBr₄, PF₃, OCl₂ D. NCl₃, CBr₄, OCl₂ E. BF₃, CBr₄, OCl₂ F. NCl₃, CBr₄, PF₃
A. AsCl₅
Choose the compound below that contains at least one polar covalent bond, but is nonpolar. A. AsCl₅ B. SCl₂ C. GeH₂Br₂ D. All of the choices are nonpolar and contain a polar covalent bond. E. CF₂Cl₂
C. sp²
Choose the correct hybridization of the atom indicated by arrow #1. A. sp B. sp³d C. sp² D. sp³d² E. sp³
D. sp³
Choose the correct hybridization of the atom indicated by arrow #2. A. sp B. sp³d C. sp² D. sp³ E. sp³d²
C. sp²
Choose the correct hybridization of the atom indicated by arrow #3. A. sp B. sp³d C. sp² D. sp³d² E. sp³
E. sp³
Choose the correct hybridization of the atom indicated by arrow #4. A. sp B. sp³d C. sp² D. sp³d² E. sp³
A. sp
Choose the correct hybridization of the atom indicated by arrow #5. A. sp B. sp³d C. sp² D. sp³d² E. sp³
F. PCl₃
Choose the molecule that has a tetrahedral electronic geometry, trigonal pyramidal molecular geometry, and is polar. A. BeCl₂ B. BF₃ C. CCl₄ D. OF₂ E. SiH₂F₂ F. PCl₃
E. B
Consider the molecule below. Determine the hybridization at each of the 3 labeled "central" atoms. A. E B. C C. D D. A E. B
F. Answer 5
Consider the molecule below. Determine the hybridization at each of the 3 labeled atoms. Atom 1/Atom 2/Atom 3 1. sp²/sp³/sp² 2. sp/sp²/sp² 3. sp³/sp²/sp 4. sp³/sp²/sp³ 5. sp³/sp²/sp² 6. sp³/sp³/sp³ A. Answer 3 B. Answer 4 C. Answer 2 D. Answer 1 E. Answer 6 F. Answer 5
A. Answer 1
Determine the electronic (electron pair) and the molecular geometry, as well as the polarity of PF5. 1. Trigonal bipyramidal/Trigonal bipyramidal/nonpolar 2. Octahedral/Octahedral/nonpolar 3. Trigonal bipyramidal/See-saw/polar 4. Octahedral/Trigonal bipyramidal/nonpolar 5. Tetrahedral/Tetrahedral /polar A. Answer 1 B. Answer 3 C. Answer 4 D. Answer 2 E. Answer 5
E. E
Determine the electronic geometry (electron pair geometry) and the molecular geometry, as well as the polarity of SeF₆ A. B B. C C. D D. A E. E
E. trigonal planar, trigonal planar
For BF₃ the electronic geometry is ___ and molecular shape is ____. A. trigonal planar, tetrahedral B. tetrahedral, linear C. tetrahedral, trigonal pyramidal D. tetrahedral, trigonal planar E. trigonal planar, trigonal planar
C. tetrahedral, trigonal pyramidal
For NF₃ the electronic geometry is ___ and molecular shape is ____. A. tetrahedral, trigonal planar B. trigonal planar, tetrahedral C. tetrahedral, trigonal pyramidal D. tetrahedral, linear E. trigonal planar, trigonal planar
A. N₂O > NO₂⁻ > NCl₃
Place the following in order of decreasing X-A-X bond angle, where A represents the central atom and X represents the outer atoms in each molecule. N₂O NCl₃ NO₂⁻ A. N₂O > NO₂⁻ > NCl₃ B. N₂O > NCl₃ > NO₂⁻ C. NO₂⁻ > N₂O > NCl₃ D. NCl₃ > NO₂⁻ >N₂O E. NCl₃ > N₂O > NO₂⁻
E. -81. kJ
Using the tabulated bond energies provided, estimate the amount of heat transfer ( ΔHrxn/ ΔErxn) when the following reaction is performed. Assume the balanced equation accurately describes the number of moles of reactants and products involved. N2 + 3H2 → 2NH3 Nitrogen-Nitrogen Triple Bond: 945 kJ/mole Hydrogen-Hydrogen Single Bond: 436 kJ/mole Nitrogen-Hydrogen Single Bond: 389 kJ/mole A. -1865 kJ B. -863 kJ C. +81. kJ D. +993 kJ E. -81. kJ F. +1087 kJ
E. B
What are the molecular geometries of the molecules XeF₄ and SF₄? A. E B. A C. D D. C E. B
D. XeF₄: Square Planar, SF₄: See-Saw
What are the molecular geometries of the molecules XeF₄: and SF₄:? A. XeF₄: Tetrahedral, SF₄: Tetrahedral B. XeF₄: Tetrahedral, SF₄: Square Planar C. XeF₄: See-Saw, SF₄: Tetrahedral D. XeF₄: Square Planar, SF₄: See-Saw E. XeF₄: Square Planar, SF₄: Square Planar
B. sp₂
What is the hybridization of the central oxygen in the ozone molecule? (O₃) A. sp₃ B. sp₂ C. not hybridized D. sp
C. 3 sigma bonds, 2 pi bonds
Which best describes the bonding in ethyne (HCCH)? A. 2 sigma bonds, 1 pi bond B. 2 sigma bonds, 1 pi bond, 1 delta bond C. 3 sigma bonds, 2 pi bonds D. 2 sigma bonds, 2 pi bonds
E. sp³d
Which of the following correctly identifies the hybridization of ClF₃? A. sp³d² B. sp² C. sp³ D. sp E. sp³d
D. Octahedral 90°
Xenon tetrafluoride (XeF4) has a(n) ______ electronic (electron pair) geometry and bond angles of ____. A. Octahedral 120° B. Square planar 180° C. See-saw 109.5° D. Octahedral 90° E. Tetrahedral 109.5° F. Octahedral 109.5° G. See-saw 120° H. Square planar 120° I. Tetrahedral 90°
