Valence Bond Theory?

Question 1

What is chemical bond?

Answer 1

• Occurs because of overlap by orbital

- One electron is from each

Question 2

What is hybridization?

Answer 2

-Mathematical procedure in which the standard atomic orbitals are combined to form molecular orbitals

Question 3

Why do we have hybridize?

Answer 3

1. It lowers internal energy of the molecule

2. Allows for orbital overlap that occurs in a chemical bond

Question 4

What type of hybridization forms from the electron geometry of a tetrahedral?

Answer 4

-sp^3

Question 5

What type of hybridization forms from the electron geometry of a trigonal planar?

Answer 5

-sp^2

Question 6

What type of hybridization forms from the electron group of a trigonal bipyramidal?

Answer 6

-sp^3d

Question 7

What type of hybridization forms from the electron group of a Octahedral?

Answer 7

-sp^3d^2

Question 8

What is the molecular orbital theory?

Answer 8

-How atomic orbitals form molecular orbitals

Question 9

What is a sigma bond?

Answer 9

• Hybrid orbital overlaps with another

- i.e. direct overlap

Question 10

What is a pi bond?

Answer 10

• Unhybridized orbital overlaps with another orbital

- Become parallel

Question 11

What is linear combination of atomic orbitals?

Answer 11

-Technique used for calculating molecular orbitals

Question 12

What is bond order?

Answer 12

• Tells us of the stability of the molecule
• The higher the value the more stable the bond
• If the bond order is negative it does not exist

Question 13

Why does a higher bond order result in a stronger/ more stable bond?

Answer 13

-B/c there are more pi and sigma bonds

Question 14

What occurs in molecular orbitals with a more electronegative atom?

Answer 14

-The higher electronegative atom properties have precedence in the molecular orbital