Bond Angles and Hybridization Concepts

This video tutorial explains how to determine bond angles in organic chemistry by understanding the hybridization of the central atom. It covers the bond angles for sp, sp2, and sp3 hybridizations, providing examples with methane, boron, ammonia, and water. The video also discusses the effect of lone pairs on bond angles and offers practice exercises for viewers to apply the concepts learned.

What is the bond angle for a molecule with an sp hybridized central atom?

• 90 degrees

• 120 degrees

• 109.5 degrees

• 180 degrees

How many groups are connected to a central atom in an sp3 hybridized molecule?

• 2

• 5

• 3

• 4

What is the bond angle for a molecule with an sp2 hybridized central atom?

• 180 degrees

• 120 degrees

• 90 degrees

• 109.5 degrees

Why is the bond angle in ammonia less than 109.5 degrees?

• Due to the presence of a double bond

• Because of the lone pair causing electron repulsion

• Because it is sp hybridized

• Due to the presence of a triple bond

What is the approximate bond angle in water (H2O)?

• 120 degrees

• 109.5 degrees

• 107.3 degrees

• 104.5 degrees

In the interactive section, what is the bond angle for a molecule with sp2 hybridization?

• 120 degrees

• 90 degrees

• 180 degrees

• 109.5 degrees

What is the bond angle for a molecule with sp hybridization?

• 109.5 degrees

• 180 degrees

• 120 degrees

• 90 degrees

How does the presence of lone pairs affect bond angles?

• They have no effect

• They increase the bond angle

• They decrease the bond angle due to electron repulsion

• They make the bond angle exactly 90 degrees

What is the bond angle for a hydronium ion (H3O+)?

• 109.5 degrees

• 120 degrees

• 107.3 degrees

• 104.5 degrees

Which hybridization corresponds to a bond angle of 109.5 degrees?

• sp3

• sp2

• sp3d

• sp