Valence Bond Theory

Question 1

VB theory Treats the formation of a molecule as arising from

Answer 1

The bringing together of complete atoms which retain most of their structure upon interacting

Question 2

VB theory Considers the reactions between

Answer 2

Separate atoms as they are brought together to form molecules

Question 3

VB theory Works on the premise that

Answer 3

Electrons are paired whenever possible

Question 4

VB theory is Unable to predict

Answer 4

Observed paramagnetism

Question 5

VB theory Completely neglects

Answer 5

Excited states

Question 6

VB theory is good for

Answer 6

Coordination compounds and simple molecules

Question 7

What can contribute to a bond according to VB

Answer 7

Only paired electrons

Question 8

How to ID a sigma bond

Answer 8

Rotate the bond around internuclear axis. Unchanged makes it a sigma

Question 9

How to ID a pi bond

Answer 9

Rotate bond 180° around axis. If signs of lobes change then it’s a pi bond

Question 10

VB theory says Hybrid orbitals form when

Answer 10

Atomic orbitals on the same atom interfere/mix