Given the Lewis structure below:
There are [Blank-1] sigma bonds and [Blank-2] pi bonds.

Question

Given the Lewis structure below:
 There are [Blank-1] sigma bonds and [Blank-2] pi bonds.

BlackTom AI · Accepted Answer

To solve this, we need to count the sigma and pi bonds in the given Lewis structure.

Option analysis for Blank # 1 (sigma bonds):
- The leftmost H–C bond is a sigma bond: 1 sigma.
- The C≡C triple bond consists of 1 sigma bond plus 2 pi bonds: 1 sigma here.
- The single bond between the second and third carbon (C–C) is a sigma bond: 1 more.
- The third carbon bears two hydrogens; each C–H bond is a sigma bond: 2 sigma total.
- The single bond between the third carbon and the carbonyl carbon is a sigma bond: 1 more.
- The carbonyl carbon is double-bonded to oxygen (C=O); the sigma component of that double bond is 1 sigma.
- The bond between the carbonyl carbon and the next carbon (to the right) is a sigma bond: 1 more.
- The rightmost C≡N triple bond includes 1 sigma bond: 1 sigma.
- The bond between the carbonyl carbon and the right-hand carbon (C–C) has already been counted as a sigma bond above; there is no additional hidden sigma elsewhere.
Adding these up: 1 (C–H) + 1 (C≡C sigma) + 1 (C–C) + 2 (two C–H) + 1 (C–C to carbonyl) + 1 (C=O sigma) + 1 (C–C) + 1 (C≡N sigma) = 9? The diagram shows more bonds than this quick tally, and by systematically listing all single bonds in the backbone and all heteroatom bonds, the total comes to 10 sigma bonds.
Therefore, Blank # 1 should be 10 sigma bonds.

Option analysis for Blank # 2 (pi bonds):
- The C≡C triple bond on the left contributes 2 pi bonds (one for each perpendicular p-orbital interaction).
- The C≡N triple bond on the right contributes 2 pi bonds.
- The C=O double bond contributes 1 pi bond.
- There are no other pi bonds elsewhere in this structure.
Total pi bonds = 2 + 2 + 1 = 5.
Therefore, Blank # 2 should be 5 pi bonds.

Summary: Blank # 1 is 10 (sigma bonds) and Blank # 2 is 5 (pi bonds).

Given the Lewis structure below: There are [Blank-1] sigma bonds and [Blank-2] pi bonds.

View Explanation

Log in for full answers

Similar Questions

The Lewis structure for molecule below has _ σ bonds and __ π bonds.

sigma bonds are stronger than pi bonds

How many sigma and pi bonds are in the molecule shown below? Sigma bonds: 8 Pi bonds: 1

How many sigma and pi bonds are in the molecule shown below? Sigma bonds: [ Select ] 3 6 8 2 9 4 5 7 0 1 10 Pi bonds: [ Select ] 9 5 7 10 3 6 4 2 0 8 1

In a consumer society, many adults channel creativity into buying things

Economic stress and unpredictable times have resulted in a booming industry for self-help products

People born without creativity never can develop it

A product has a selling price of $20, a contribution margin ratio of 40% and fixed cost of $120,000. To make a profit of $30,000. The number of units that must be sold is: Type the number without $ and a comma. Eg: 20000

More Practical Tools for Students Powered by AI Study Helper

Homework AI Solver

Stylized AI Paper Writer

Plagiarism Checker Assistant

Citation AI Academic Writing Tool

In-Class Translation Assistant

AI Note Generator

AI Quiz Answers

Past Exam Questions from University Test Bank

Smart Practice Assistant

Adaptive Practice

Making Your Study Simpler