11. Bonding & Molecular Structure
Lewis Dot Structures: Sigma & Pi Bonds
11. Bonding & Molecular Structure
Lewis Dot Structures: Sigma & Pi Bonds - Video Tutorials & Practice Problems
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Sigma Bonds directly connect element together, while Pi Bonds provide insulation and protection for those bonds.
Sigma and Pi Bonds
1
concept
Lewis Dot Structures: Sigma & Pi Bonds
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2
example
Lewis Dot Structures: Sigma & Pi Bonds Example 1
Video duration:
43sPlay a video:
3
Problem
ProblemHow many pi bonds does the following molecule contain?
A
1
B
2
C
3
D
4
4
Problem
ProblemHow many sigma bonds does the following molecule contain?
A
12
B
8
C
9
D
10
5
Problem
ProblemWhich has greater bond strength between the carbon–carbon bond.
C2Cl2 vs. C2Cl6
A
C2Cl2
B
C2Cl6
6
Problem
ProblemDraw the total number of sigma and pi bonds of the sulfur trioxide molecule, SO3.
A
4 sigma, 0 pi
B
3 sigma, 1 pi
C
2 sigma, 2 pi
D
1 sigma, 3 pi
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PRACTICE PROBLEMS AND ACTIVITIES (33)
- Which molecule has the shortest carbon–oxygen bond? (LO 7.3, 7.9) (a) CH3OH (b) CO (c) CO2 (d) HCOOH
- The partial Lewis structure that follows is for a hydrocarbon molecule. In the full Lewis structure, each car...
- In the hydrocarbon (b) How many s bonds are there in the molecule?
- The drawing below shows the overlap of two hybrid orbitals to form a bond in a hydrocarbon. (a) Which of the ...
- Estimate the P¬Cl bond length from the data in Figure 7.7 and compare your value to the experimental P¬Cl bond...
- The following diagram shows the potential energy of two atoms as a function of internuclear distance. Which bo...
- The following ball-and-stick molecular model is a representation of acetaminophen, the active ingredient in su...
- (c) Do you expect the O¬O bond in H2O2 to be longer or shorter than the O¬O bond in O2? Explain.
- (c) Which is generally stronger, a s bond or a p bond? Explain.
- Compare the O—O bond length in O2 versus H2O2. Which bond is shorter? Why?
- Based on Lewis structures, predict the ordering, from shortest to longest, of N¬O bond lengths in NO+, NO2-, a...
- (b) Imagine that you could hold two atoms that are bonded together, twist them, and not change the bond lengt...
- Consider the Lewis structure for acetic acid, which is known as vinegar: (c) What is the total number of s bo...
- Consider the Lewis structure for acetic acid, which is known as vinegar: (b) What are the hybridizations of t...
- Bupropion, marketed as Wellbutrin, is a heavily prescribed medication used in the treatment of depression. Co...
- Acrylonitrile 1C3H3N2 is a molecule that is polymerized to make carpets and fabrics. The connections between ...
- Order these compounds in order of decreasing carbon–carbon bond length: HCCH, H2CCH2, H3CCH3.
- Order these compounds in order of increasing carbon–carbon bond strength: HCCH, H2CCH2, H3CCH3.
- Which of the two compounds, H2NNH2 and HNNH, has the strongest nitrogen-nitrogen bond, and which has the short...
- The structure of acetylsalicylic acid (aspirin) is shown here. How many sigma bonds?
- The structure of acetylsalicylic acid (aspirin) is shown here. How many pi bonds are present in acetylsalicyli...
- Some mothballs used when storing clothes are made of naphthalene (C10H8), which has the following incomplete s...
- Consider the molecule C4H5N, which has the connectivity shown below. (a) After the Lewis structure for the mol...
- Butadiene, C4H6, is a planar molecule that has the following carbon–carbon bond lengths: (c) The middle C¬...
- The structure of borazine, B3N3H6, is a six-membered ring of alternating B and N atoms. There is one H atom bo...
- Propose structures for molecules that meet the following descriptions. (b) Contains an N atom that has one p...
- Which of the two compounds, H2NNH2 and HNNH, has the strongest nitrogen-nitrogen bond, and which has the short...
- How many 𝜎 and 𝜋 bonds are in this molecule?
- Which of the two compounds, H2NNH2 and HNNH, has the strongest nitrogen-nitrogen bond, and which has the short...
- How many sigma and pi bonds, respectively, are in this carboxylic acid?
- How many of the following molecules contain at least one pi bond? C2H6 Cl2CO C2Cl4 HCN
- Draw the Lewis structure for the molecule CH2CHCH3. How many sigma and pi bonds does it contain?
- The carbon-carbon bond in C2H2 contains ________ σ and ________ π bonds.