Molecular Orbitals

Question 1

What is different about orbital approx for atoms and molecules

Answer 1

Molecules have molecular interactions

Question 2

What is the difference in the MO equation for in phase and out of phase

Answer 2

The sign

Question 3

What is the Aufbau principle

Answer 3

Lowest energy first

Question 4

What is Hunds rule

Answer 4

Spin must be different

Question 5

What is the Pauli principe

Answer 5

Only 2 electrons in an orbital

Question 6

What is the equation for BO

Answer 6

1/2(bond-anti)

Question 7

What must occur for LCAO

Answer 7

Sufficient cross over
Same symmetry
Similar energies

Question 8

Draw the molecular orbitals

Answer 8

.

Question 9

What symmetry is sigma *

Answer 9

U

Question 10

Where does a more electronegative element lie

Answer 10

Lower down

Question 11

Which element has more electron density in the anti bonding orbital

Answer 11

Less Zeff

Question 12

What is added to MO equations to account for Zeff

Answer 12

Coefficient to give % of AO in MO

Question 13

What is used to identify s p mixing

Answer 13

Photoelectron spectroscopy

Question 14

What is s p mixing also known as

Answer 14

Sigma pi

Question 15

What must the Orbitals have to experience s p mixing

Answer 15

Same symmetry

Similar energies

Question 16

Which elements is s p mixing noticeable in

Answer 16

Li 2 and N2