Understanding SP2 Hybridization and Isomerism

What type of bond is formed by the direct head-on overlap of orbitals?

• Pi bond

• Sigma bond

• Gamma bond

• Delta bond

In SP2 hybridization, how many unhybridized p orbitals remain?

• Two

• Three

• None

• One

What is the spatial arrangement of atoms in ethylene?

• Tetrahedral

• Pyramidal

• Linear

• Planar

What phenomenon arises due to restricted rotation around a double bond?

• Tautomerism

• Resonance

• Cis-trans isomerism

• Free rotation

Which molecule is used as an example to explain free rotation in single bonds?

• Butane

• Ethane

• Propane

• Ethylene

What is required to rotate around a double bond?

• Adding a catalyst

• Increasing temperature

• Breaking the pi bond

• Breaking the sigma bond

What is the molecular formula of 1,2-dibromoethane?

• C2H5Br2

• C2H2Br2

• C2H6Br2

• C2H4Br2

In the cis form of 1,2-dibromoethane, where are the bromine atoms located?

• At the ends of the molecule

• On the same side of the double bond

• In the center of the molecule

• On opposite sides of the double bond

What type of overlap characterizes a pi bond?

• Vertical overlap

• Diagonal overlap

• Sideways overlap

• Head-on overlap

What is the main takeaway regarding pi bonds and rotation?

• Pi bonds enhance rotation

• Pi bonds have no effect on rotation

• Pi bonds restrict rotation

• Pi bonds allow free rotation