Which statement is false? A sigma molecular orbital: O a. may result from overlap of p atomic orbitals perpendicular to the molecular axis (side-on) O b. may result from overlap of two s atomic orbitals. O c. may result from overlap of p atomic orbitals along the molecular axis (head-on) Od. may result from overlap of ones and one p atomic orbitals e. may be either bonding or antibonding

Consider acetyl salicylic acid, better known as aspirin. Its structure is (a) How many sigma and pi bonds are there in aspirin? (b) What are the approximate values of the angles marked (in blue) A, B, and C? (c) What is the hybridization of each atom marked (in red) 1, 2, and 3?

Explain what is wrong with each of the following statements. a. “A bond is a double bond. b. “A bond consists of four electrons, one in each of the four p orbitals involved in the bond. c. “A bond is twice as strong as a bond because it consists of two orbital overlaps insteadof just one.”

Which molecule below has a nonpolar bond in which the electrons are being shared equally? a.H2O b.NH3 c.Cl2 d.CH4

Consider the following flat drawing of methane (CH4) . a. What is HCH bond angle implied by this drawing if you assume it is flat? b. Are the electron domains of this flat CH4 spread out as much as possible? c. Use model materials to make a model of CH4 (methane). If you assembled it correctly, thefour bonds (bonding electron domains) of your model will be 109.5° apart. d. In which representation, the drawing above or the model in your hand (circle one) are theH’s of CH4 more spread out around the central carbon? e. Confirm that your model looks like the following drawing. The wedgebond represents a bond coming out of the page, and the dash bondrepresents a bond going into the page f. You will often see methane drawn as if it were flat (like on the previous page). Why is thismisleading, and what is left to the viewer’s imagination when looking at such a drawing?

Numerous molecules are detected in deep space. Three of them are illustrated here. (a) Are these compounds isomers? (b) Indicate the hybridization of each C atom in each molecule. (c) What is the value of the HCH angle in each of the three molecules? (d) Which of these molecules is/are polar? (e) Which molecule should have the strongest carbon-carbon bond? The strongest carbon-oxygen bond?

Give the shape that describes each hybrid orbital set: (a) sp2 (b) sp3d (c) sp (d) sp3d2

Determine the hybridization of the marked N atom in tofacitinib, a drug used to treat rheumatoid arthritis. In what type of orbital does the lone pair on this N atom reside? (Lone pairs have been omitted in this structure.) N. N, NEC. N tofacitinib N' sp hybridized; sp orbital sp hybridized; sp° orbital 3. sp° hybridized; p orbital sp hybridized; sp² orbital sp hybridized; p orbital 3D

Indicate the electron geometry (including electron domains) and hybridisation of the indicated atoms in the following molecule (NOTE: lone pairs are not explicitly shown).

Every atomic orbital, every molecular orbital has a particular name, such as s orbital, p orbital, d orbital, s orbital, p orbital, s* orbital, p* orbital, etc. a. What are the names of the atomic orbitals in 5d above? b.What is the name of the molecular orbital in 5f above