Question

9. In the molecule ethene (C2H4) each carbon has a complete octet. Why, however, are the elements around each atom not arranged in tetrahedral geometry? There are only three electron domains because two of the bonds form a double bond, thus giving each carbon trigonal planar geometry. The central carbon has five total atoms attached to it (one carbon and four hydrogen) giving it trigonal bipyramidal geometry. It only has three bonds, so it only has three electron domains. It has two carbons, thus neither carbon is able to have tetrahedral geometry. 10. Assess the accuracy of the following series of statements. 1) Both H2O and CO2 are triatomic molecules. 2) The Lewis dot structure of H2O shows us that H2O has bent shape due to the presence of two lone pairs on the oxygen atom. 3) Therefore, CO2 must also be a bent molecule since it is also a triatomic molecule.

          9. In the molecule ethene (C2H4) each carbon has a complete octet. Why, however, are the elements around each atom not arranged in tetrahedral geometry?

There are only three electron domains because two of the bonds form a double bond, thus giving each carbon trigonal planar geometry.

The central carbon has five total atoms attached to it (one carbon and four hydrogen) giving it trigonal bipyramidal geometry.

It only has three bonds, so it only has three electron domains.

It has two carbons, thus neither carbon is able to have tetrahedral geometry.

10. Assess the accuracy of the following series of statements.

1) Both H2O and CO2 are triatomic molecules.

2) The Lewis dot structure of H2O shows us that H2O has bent shape due to the presence of two lone pairs on the oxygen atom.

3) Therefore, CO2 must also be a bent molecule since it is also a triatomic molecule.

Show more…

9. In the molecule ethene (C2H4) each carbon has a complete octet. Why, however, are the elements around each atom not arranged in tetrahedral geometry?

There are only three electron domains because two of the bonds form a double bond, thus giving each carbon trigonal planar geometry.

The central carbon has five total atoms attached to it (one carbon and four hydrogen) giving it trigonal bipyramidal geometry.

It only has three bonds, so it only has three electron domains.

It has two carbons, thus neither carbon is able to have tetrahedral geometry.

10. Assess the accuracy of the following series of statements.

1) Both H2O and CO2 are triatomic molecules.

2) The Lewis dot structure of H2O shows us that H2O has bent shape due to the presence of two lone pairs on the oxygen atom.

3) Therefore, CO2 must also be a bent molecule since it is also a triatomic molecule.

Added by Carlos R.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Susan Hallstrom

06/04/2022

Step 1

2) The Lewis dot structure of H2O shows us that H2O has a bent shape due to the presence of two lone pairs on the oxygen atom. 3) Therefore, CO2 must also be a bent molecule since it is also a triatomic molecule. ** Show more…

Show all steps

lock

Thanks for your feedback!

In the molecule ethene (C2H4), each carbon has a complete octet. However, the elements around each atom are not arranged in a tetrahedral geometry. There are only three electron domains because two of the bonds form a double bond, thus giving each carbon a trigonal planar geometry. The central carbon has five total atoms attached to it (one carbon and four hydrogen), giving it a trigonal bipyramidal geometry. It only has three bonds, so it only has three electron domains. Since it has two carbons, neither carbon is able to have a tetrahedral geometry. Assess the accuracy of the following series of statements. 1) Both H2O and CO2 are triatomic molecules. 2) The Lewis dot structure of H2O shows us that H2O has a bent shape due to the presence of two lone pairs on the oxygen atom. 3) Therefore, CO2 must also be a bent molecule since it is also a triatomic molecule.

Play audio

Feedback

Powered by NumerAI

Susan Hallstrom and 80 other subject Chemistry 101 educators are ready to help you.

Ask a new question

Labs

Want to see this concept in action?

NEW

Explore this concept interactively to see how it behaves as you change inputs.

View Labs

Key Concepts

Recommended Videos

Recommended Textbooks

Transcript

00:01 We have some questions, two questions to answer, and our first question is in a molecule of ethene, c2h4.

00:08 Each carbon has a complete octet.

00:12 Why, however, are the elements around each atom not tetrahedral? why? and is this not tetrahedral? let's do a quick sketch.

00:36 Here is the quick sketch of ethene.

00:41 And please note that we have trigonal planer and trigonal planer.

00:53 So we've got two trigonal planers, two trigonal planer, which is sp2, which gives us three electron bonding sites, not four as required by a tetrahedron.

01:32 Oh, i'm sorry about this.

01:34 So there were answers here.

01:35 There are only three electron domains because two of the bonds form a double bond.

01:40 Two of the bonds form a domon.

01:42 Giving each carbon trigonal planar.

01:44 That's true.

01:49 And i'm going to have to write these down.

01:57 So there are only three electron domains, which is true.

02:03 Only three electron domains.

02:09 And then i'm going to add for each carbon because two of the bonds form a double bond.

02:19 And i don't really like because two of the bonds.

02:22 I like because two of the orbitals, that's not the word you use, form a double bond.

02:36 So thus, as i said earlier, it's trigonal planar for each carbon.

02:51 And that's true.

02:53 This is true.

02:55 So my false statements are, my first false statement is the central carbon has five total absence.

03:06 The central carbon has five total atoms attached, and i'm not even going to write the rest.

03:16 This is not true...

Ace is your personal tutor. It breaks down any question with clear steps so you can learn.

Start Using Ace

Continue solving this problem

Create a free account to:

View full step-by-step solution
Ask follow-up questions with Ace AI
Save progress and study later