Valence Bonding Theory

Valence Bonding Theory

Multiple Choice

Which of the following shapes has an unshared pairs of electrons on the central atom? 

• Bipyramidal
• Bent
• Trigonal Planar
• Tetrahedral

Multiple Choice

 A lone pair is defined as

• A pair of bonding electrons
• One non-bonding electron
• A pair of non-bonding electrons
• A pair of electrons on the central atom

Multiple Choice

If electrons are shared unequally then the bond is....

• Non-polar covalent
• Ionic
• Non-polar ionic
• Polar covalent

Multiple Choice

Which of the following is the correct Lewis structure for the compound PBr₃?

• structure A
• structure B
• structure C
• structure D

Multiple Choice

VSEPR theory is to

• determine the number of bonding and lone pairs electrons
• determine the number of ECC
• determine the shape and geometry of molecule
• determine the lewis structure of molecule

Multiple Choice

Which statement is TRUE, based on the diagram provided?

• atomic orbital overlap to produce sigma bond
• s orbital overlap to produce π bond
• s orbital overlap with s orbital to produce sigma bond
• p orbital overlap to produce π bond

Multiple Choice

Which molecule will undergo the following hybridization?

• NH₃
• CH₄
• PCI₃
• SiH₄

Multiple Choice

Diagram shows oxygen atom undergoing hybridization. Which statement is FALSE ?

• 2 bonding and 2 lone pair are formed
• O atom has tetrahedral electron arrangement
• four sp³ hybrid orbitals are formed
• shape of molecule is tetrahedral

Multiple Choice

What is the hybridization of a linear molecule?

• sp

• sp²

• sp³

• sp³d

Multiple Choice

What is the hybridization of the Carbon atom indicated by the arrow?

• sp hybridization

• sp² hybridization

• sp³ hybridization

• dsp³ hybridization

Multiple Choice

How many sigma and pi bonds does this have? 

• 3 sigma and 2 pi
• 5 sigma and 5 pi
• 5 sigma and 0 pi
• 0 sigma and 5 pi