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Lewis Dot Structures: Sigma & Pi Bonds Solutions Library

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Lewis Dot Structures: Sigma & Pi Bonds

Q. Identify the shortest bonda) triple covalent bondb) double covalent bondc) single covalent bondd) All of the above bonds are the same length

Solved • Feb 1, 2021

Lewis Dot Structures: Sigma & Pi Bonds

Q. How many sigma bonds and pi bonds are in there in each of the following molecules.

Solved • Jan 27, 2021

Lewis Dot Structures: Sigma & Pi Bonds

Q. Answer the questions below about the highlighted atom in this Lewis structure: In how many pi bonds does the highlighted atom participate? In how m...

Solved • Nov 18, 2020

Lewis Dot Structures: Sigma & Pi Bonds

Q. How do you count sigma and pi bonds?

Solved • Nov 11, 2020

Lewis Dot Structures: Sigma & Pi Bonds

Q. How many sigma and pi bonds does this molecule have?HOOCHCCHCH2CCH

Solved • Oct 22, 2020

Lewis Dot Structures: Sigma & Pi Bonds

Q. How many sigma bonds and pi bonds does this molecule have?(CH3)2CCHCH2CCCOOH

Solved • Oct 22, 2020

Lewis Dot Structures: Sigma & Pi Bonds

Q. Part A. How many σ and π bonds are present in a molecule of cumulene? Enter the number of σ bonds followed by the number of π bonds separated by a ...

Solved • Jul 2, 2020

Lewis Dot Structures: Sigma & Pi Bonds

Q. Which of the two compounds, H2NNH2 and HNNH, has the strongest nitrogen-nitrogen bond, and which has the shorter nitrogen-nitrogen bond. a) H2NNH2 ...

Solved • Apr 29, 2020

Lewis Dot Structures: Sigma & Pi Bonds

Q. Which of the following species below will have the weakest sulfur-oxygen bond?(1) SO2                      (2) SO3                                 ...

Solved • Apr 28, 2020

Lewis Dot Structures: Sigma & Pi Bonds

Q. Draw the Lewis structure for the molecule C3H4. How many sigma and pi bonds does it contain?a) 8 sigma, 2 pib) 10 sigma, 2 pic) 6 sigma, 2 pid) 8 s...

Solved • Apr 21, 2020

Lewis Dot Structures: Sigma & Pi Bonds

Q. How many sigma (σ) and pi (π) bonds are in a molecule of acetone, (CH3)2CO?a) 9 σ, 2 πb) 8 σ, 1 πc) 8 σ, 2 πd) 9 σ, 1 πe) 10 σ, 0 π

Solved • Apr 21, 2020

Lewis Dot Structures: Sigma & Pi Bonds

Q. For each set below, rank the bonds according to length. Si - H          Si - O          Si - SN - N            N = N          N ≡ N         

Solved • Apr 14, 2020

Lewis Dot Structures: Sigma & Pi Bonds

Q. Order these compounds in order of decreasing carbon-carbon bond length.a) H2CCH2 > H3CCH3 > HCCHb) H3CCH3 > H2CCH2 > HCCHc) HCCH > H...

Solved • Apr 13, 2020

Lewis Dot Structures: Sigma & Pi Bonds

Q. Order these compounds in order of increasing carbon-carbon bond strength.a) H2CCH2 < H3CCH3 < HCCHb) H3CCH3 < H2CCH2 < HCCHc) HCCH <...

Solved • Apr 13, 2020

Lewis Dot Structures: Sigma & Pi Bonds

Q. Of the bonds C-C, C—C and C=C, the C-C bond is _____. A) strongest/shortestB) strongest/longestC) weakest/longestD) weakest shortest E) intermediat...

Solved • Mar 20, 2020

Lewis Dot Structures: Sigma & Pi Bonds

Q. In the Lewis structure below, correctly identify the number of sigma bonds and number of pi bonds.A) six sigma, two piB) seven sigma, three piC) si...

Solved • Nov 25, 2019

Lewis Dot Structures: Sigma & Pi Bonds

Q. As the number of bonds between two carbon atoms increases, which one of the following decreases?A. number of electrons between the carbon atomsB. b...

Solved • Nov 21, 2019

Lewis Dot Structures: Sigma & Pi Bonds

Q. The central atom in SOCl2 is a sulfur atom. Fill in the blanks in the statement below:The sulfur-oxygen bond is a ________ and there are _________ ...

Solved • Oct 9, 2019

Lewis Dot Structures: Sigma & Pi Bonds

Q. Lidocaine, discovered in 1946 is often used today by dentists to cause localized numbing. Its structure is shown below. How many pi and sigma bonds...

Solved • Oct 1, 2019

Lewis Dot Structures: Sigma & Pi Bonds

Q. Of the bonds C—C, C=C, and C≡C, the C—C bond is ____.a. strongest/shortestb. strongest/longestc. weakest/longestd. weakest/shorteste. intermediate ...

Solved • Aug 2, 2019

Lewis Dot Structures: Sigma & Pi Bonds

Q. One of the first drugs to be approved for use in treatment of acquired immune deficiency syndrome (AIDS) was azidothymidine (AZT). Complete the Lew...

Solved • Nov 27, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. Two molecules used in the polymer industry are azodicarbonamide and methyl cyanoacrylate. Their structures areAzodicarbonamide is used in forming p...

Solved • Nov 27, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. Vitamin B6 is an organic compound whose deficiency in the human body can cause apathy, irritability, and an increased susceptibility to infections....

Solved • Nov 27, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. Many important compounds in the chemical industry are derivatives of ethylene (C2H4). Two of them are acrylonitrile and methyl methacrylate.Complet...

Solved • Nov 27, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. Biacetyl and acetoin are added to margarine to make it taste more like butter.How many σ bonds and how many π bonds are there in biacetyl and acetoin?

Solved • Nov 27, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. Indigo is the dye used in coloring blue jeans. The term navy blue is derived from the use of indigo to dye British naval uniforms in the eighteenth...

Solved • Nov 27, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. Pelargondin is the molecule responsible for the red color of the geranium flower. It also contributes to the color of ripe strawberries and raspber...

Solved • Nov 27, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. Order the following species with respect to carbon–oxygen bond length (longest to shortest).CO, CO2, CO3 -2, CH3O2HWhat is the order from the weake...

Solved • Nov 27, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. Which member of the following pairs would you expect to be more energetically stable? Justify each choice.a. NaBr or NaBr 2

Solved • Nov 26, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. Butadiene, C4H6, is a planar molecule that has the following carbon-carbon bond lengths: Based on your answer for Part D, discuss what additi...

Solved • Nov 12, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. Consider the lattice energies of the following Group 2A compounds: BeH2, 3205 kJ/mol; MgH2, 2791 kJ/mol; CaH2, 2410 kJ/mol; SrH2, 2250 kJ/mol; BaH2...

Solved • Nov 12, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. The partial Lewis structure that follows is for a hydrocarbon molecule. In the full Lewis structure, each carbon atom satisfies the octet rule, and...

Solved • Nov 12, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. True or false:The C-C bond in acetylene, HCCH, is longer than the average C-C bond length in benzene.

Solved • Nov 12, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. Is the nitrogen–oxygen bond in NO+ longer, shorter, or the same length as the nitrogen–oxygen bond in NO? Complete the explanation.

Solved • Nov 12, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. A new compound is made that has an N-N bond length of 1.49 Å.Is this bond likely to be a single, double, or triple N-N bond?

Solved • Nov 12, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. A new compound is made that has a carbon-carbon bond length of 1.15 Å. Is this bond likely to be a single, double, or triple carbon-carbon bond?

Solved • Nov 12, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. We have just arrived at a bonding description for the formaldehyde molecule. Which of the following statements about the molecule is or are true?Tw...

Solved • Nov 12, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. Draw the Lewis structure(s) for the molecule with the chemical formula C2H3N, where the N is connected to only one other atom. How many double bond...

Solved • Nov 12, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. The drawing below shows the overlap of two hybrid orbitals to form a bond in a hydrocarbon.Which of the following types of bonds is being formed: (...

Solved • Nov 12, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. Mothballs are composed of naphthalene, C10H8, a molecule that consists of two six-membered rings of carbon fused along an edge, as shown in this in...

Solved • Nov 12, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. How many σ and π pi bonds are there in each molecule: ethane (C2H6), ethylene (C2H4), and acetylene (C2H2)?

Solved • Nov 12, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. Based on Lewis structures, predict the ordering, from shortest to longest, of N - O bond lengths in NO+, NO2-, and NO3-.

Solved • Nov 12, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. Would you expect the O-O bond in O2 to be shorter or longer than the O-O bond in compounds that contain an O-O single bond? Explain.

Solved • Nov 12, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. Consider the molecule C4H5N, which has the connectivity shown below.After the Lewis structure for the molecule is completed, how many σsigma and π ...

Solved • Nov 12, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. The lactic acid molecule, CH3CH (OH) COOH, gives sour milk its unpleasant, sour taste.How many pi bonds are in the molecule?

Solved • Nov 12, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. Explain the following.The peroxide ion, O22-, has a longer bond length than the superoxide ion, O2-.

Solved • Nov 12, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. Arrange SO2, SO3, and SO32- in order of decreasing S-O bond distance.

Solved • Nov 12, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. Consider the Lewis structure for glycine, the simplest amino acid:What is the total number of σ bonds in the entire molecule, and what is the total...

Solved • Nov 12, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. Estimate the As-I bond length from the data in the figure.

Solved • Nov 12, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. The structure of acetylsalicylic acid (aspirin) is shown below.How many pi bonds are present in acetylsalicylic acid?

Solved • Nov 12, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. Which of the two compounds, H2NNH2 and HNNH, has the strongest nitrogen-nitrogen bond, and which has the shorter nitrogen-nitrogen bond.

Solved • Nov 12, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. Consider the following three compounds: HCCH, H2CCH2, H3CCH3. Order these compounds in order of increasing carbon-carbon bond strength.

Solved • Nov 12, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. Consider the following three compounds: HCCH, H2CCH2, H3CCH3. Order these compounds in order of decreasing carbon-carbon bond length.

Solved • Nov 12, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. Oxalic acid (H2C2O4) is found in toxic concentrations in rhubarb leaves. The acid forms two ions, HC2O4− and C2O42−, by the sequential loss of H + ...

Solved • Oct 28, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. Tryptophan is one of the amino acids found in proteins:How many σ bonds are present in tryptophan?

Solved • Oct 24, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. Epinephrine (or adrenaline; below) is a naturally occurring hormone that is also manufactured commercially for use as a heart stimulant, a nasal de...

Solved • Oct 24, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. Identify the weakest covalent bond. A. N-Na B. N-C C. N=C D. N≡C E. All covalent bonds have the same strength

Solved • Jul 4, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. Draw the Lewis structure for the molecule CH 3CH2CCH. How many sigma and pi bonds.

Solved • Mar 22, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. Consider the following compound. CH3CHCHCO2HHow many sigma and pi bonds does it contain?

Solved • Mar 13, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. Draw the Lewis structure of NO and CCl 2F2 labeling each bond as sigma or pi.

Solved • Feb 14, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. Rank the following in order of C-C bond strength, list them from lowest to highest. BONUS: Provide the bond strengths for these bonds.

Solved • Jan 4, 2018

Lewis Dot Structures: Sigma & Pi Bonds

Q. a) Draw the Lewis Structure for CH3Cl. The central atom is ______. The geometry around the central atom is ______. The bond angle, Cl-C-H, is _____...

Solved • Dec 19, 2017

Lewis Dot Structures: Sigma & Pi Bonds

Q. Which of the following has the longest bond?N2NO-N22+NO22-O22-

Solved • Jul 10, 2017

Lewis Dot Structures: Sigma & Pi Bonds

Q. How many sigma and how many pi bonds are present in adenine? 14 sigma and 4 pi 18 sigma and 0 pi 11 sigma and 4 pi 16 sigma and 4 pi 12 sigm...

Solved • Jul 10, 2017

Lewis Dot Structures: Sigma & Pi Bonds

Q. How many sigma and pi bonds are in the molecule NH 2CHCCH2? You need to draw the Lewis structure to see all the bonds. 1. 6 sigma and 2 pi 2. 3 s...

Solved • Jun 20, 2017

Lewis Dot Structures: Sigma & Pi Bonds

Q. Which of the following diatomic molecules has the shortest bond length?A) N2B) O2C) F2D) Cl2E) Br2

Solved • Jun 19, 2017

Lewis Dot Structures: Sigma & Pi Bonds

Q. Identify the shortest bond. A) triple covalent bond B) single covalent bond C) double covalent bond D) all of the above bonds are the same length

Solved • May 15, 2017

Lewis Dot Structures: Sigma & Pi Bonds

Q. The total number of sigma and pi bonds in the following molecule are: Sigma bonds:______Pi bonds: ________

Solved • May 2, 2017

Lewis Dot Structures: Sigma & Pi Bonds

Q. How many σ bonds and how many π bonds are present in the HCN molecule? a. 1 σ /1 π b. 1 σ /2 π c. 3 σ /2 π d. 2 σ /2 π e. 0 σ /0 π

Solved • Mar 16, 2017

Lewis Dot Structures: Sigma & Pi Bonds

Q. A double bond consists of 1. two pi bonds. 2. two beta bonds. 3. one sigma and one pi bond.  4. two sigma bonds. 5. an alpha and a beta bond. ...

Solved • Jan 13, 2017

Lewis Dot Structures: Sigma & Pi Bonds

Q. How many σ and π bonds are in the molecule?1. 6 σ; 1 π2. 7 σ; 1 π3. 5 σ; 2 π4. 5 σ; 1 π5. 6 σ; 2 π

Solved • Nov 1, 2016

Lewis Dot Structures: Sigma & Pi Bonds

Q. Which of the following statements about covalent bonds between nitrogen atoms is correct? a) The bond length for a nitrogen single bond is shorter...

Solved • Oct 12, 2016

Lewis Dot Structures: Sigma & Pi Bonds

Q. Select the strongest bond in the following group. a. C-S b. C=N c. C=O d. C=C e. C-F  

Solved • Aug 24, 2016

Lewis Dot Structures: Sigma & Pi Bonds

Q. According to valence bond theory, the triple bond in ethyne (acetylene, H-C≡C-H) consists ofa. three δ bonds and no π bonds.b. two δ bonds and one ...

Solved • Aug 24, 2016

Lewis Dot Structures: Sigma & Pi Bonds

Q. Examine each of the following molecules. Which molecule has the shortest carbon-nitrogen bond?  

Solved • Aug 11, 2016

Lewis Dot Structures: Sigma & Pi Bonds

Q. Draw the Lewis structure for the molecule CH 2CHCH3 . How many sigma and pi bonds does it contain? A. 8 σ, 1 π B. 9 σ, 0 π C. 9 σ, 1 π D. 7 σ, ...

Solved • Aug 8, 2016

Lewis Dot Structures: Sigma & Pi Bonds

Q. How many sigma bonds and how many pi bonds are represented in this structure? Sigma Bonds                                 Pi Bonds a)            ...

Solved • May 6, 2016

Lewis Dot Structures: Sigma & Pi Bonds

Q. When the carbon-carbon bonds in ethane (C2H6), ethene (C2H4), and benzene (C6H6), are arranged in order of increasing length (shortest bonds first)...

Solved • Apr 26, 2016

Lewis Dot Structures: Sigma & Pi Bonds

Q. Which species has a different number of pi bonds than the others? a) C2H2 b) CO2 c) N2 d) O3

Solved • Apr 22, 2016

Lewis Dot Structures: Sigma & Pi Bonds

Q. Which is the longest bond? A) N — N B) N ≡ N C) N = N D) All three bond lengths should be about the same

Solved • Apr 20, 2016

Lewis Dot Structures: Sigma & Pi Bonds

Q. Draw the Lewis structure for the molecule C 3H4.  How many sigma and pi bonds does it contain? A) 8 sigma, 2 pi B) 6 sigma, 2 pi C) 10 sigma, 0 ...

Solved • Apr 11, 2016

Lewis Dot Structures: Sigma & Pi Bonds

Q. In general, what bond types make up a triple bond? a) three sigma bonds b) two sigma bonds and a pi bond c) a sigma bond and two pi bonds d) tw...

Solved • Mar 25, 2016

Lewis Dot Structures: Sigma & Pi Bonds

Q. Choose the covalent bond below that is the strongest (highest bond energy). a.  N=O b.  N-O c.  N-N d.  N=N e.  N-C

Solved • Mar 10, 2016

Lewis Dot Structures: Sigma & Pi Bonds

Q. How many sigma (σ) and pi (π) bonds are there in a molecule of sulfuric acid (H2SO4)? (a) σ = 4 π = 2 (b) σ = 7 π = 1 (c) σ = 2 π = 5 (d) σ = 3...

Solved • Mar 9, 2016

Lewis Dot Structures: Sigma & Pi Bonds

Q. Which statement best explains why the sigma (σ) bond is stronger than the pi (π) bond? (a) Sigma bonds involve more electrons than pi bonds. (b) ...

Solved • Mar 9, 2016

Lewis Dot Structures: Sigma & Pi Bonds

Q. Select the strongest bond in the following group.  (a) C−S (b) C−O (c) C=C (d) C=O (e) C−F

Solved • Mar 9, 2016

Lewis Dot Structures: Sigma & Pi Bonds

Q. The number of pi bonds in the molecule below is 

Solved • Mar 7, 2016

Lewis Dot Structures: Sigma & Pi Bonds

Q. The number of pi bonds in the molecule below is 1) 2 2) 4 3) 6 4) 10 5) 15

Solved • Mar 1, 2016

Lewis Dot Structures: Sigma & Pi Bonds

Q. Which molecule in each pair has the shortest bond length? I. O2 vs. N2           II. H 2O or H 2S         III. NO + or NO -   a. I. N2   II. H2O...

Solved • Feb 19, 2016

Lewis Dot Structures: Sigma & Pi Bonds

Q. In which of the following molecules is the carbon-carbon bond likely to be the strongest?a. H3CCH3b. H2CCH2c. CH3CH2Fd. HCCHe. H2CO

Solved • Feb 19, 2016

Lewis Dot Structures: Sigma & Pi Bonds

Q. Place the following in order of  decreasing bond length around the central element. SiO3 2–        CO2        CO 3 2– A) CO2 > SiO3 2– > CO...

Solved • Feb 18, 2016

Lewis Dot Structures: Sigma & Pi Bonds

Q. Which compound has the longest carbon-carbon bond length?A) CH3CH3B) CH2CH2C) HCCHD) all bond lengths are the same

Solved • Feb 18, 2016

Lewis Dot Structures: Sigma & Pi Bonds

Q. Consider the following covalent bond radii:       Single      Double      Triple C     77 pm      67 pm      60 pmN     75 pm      60 pm      55 pm...

Solved • Feb 18, 2016

Lewis Dot Structures: Sigma & Pi Bonds

Q. How many σ and π bonds are there in the molecule below?1. 7 σ, 1 π2. 6 σ, 2 π3. 5 σ, 2 π4. 6 σ, 1 π

Solved • Feb 17, 2016

Lewis Dot Structures: Sigma & Pi Bonds

Q. Select the compound with the shortest and strongest carbon-carbon bond.a. H2C=CH2b. C2H6c. H-C≡C-CH3d. H2C=C=CH2e. H3C-CH2-CH3

Solved • Feb 17, 2016

Lewis Dot Structures: Sigma & Pi Bonds

Q. The molecule HCN (C is the central atom) has 1. 2 sigma and 2 pi bonds. 2. 1 sigma and 3 pi bonds. 3. 4 sigma bonds. 4. 2 sigma bonds. 5. 2 si...

Solved • Feb 17, 2016