Molecular Orbital Theory Quiz

What is the primary difference in energy between bonding and antibonding molecular orbitals?

• Antibonding orbitals have lower energy than bonding orbitals.

• Bonding orbitals have lower energy than antibonding orbitals.

• Both have the same energy.

• Bonding orbitals have higher energy than antibonding orbitals.

How many types of molecular orbitals are formed when atomic orbitals combine?

• Four types

• One type

• Two types

• Three types

Which atomic orbitals form pi bonds in molecular orbitals?

• 2pz and 2s

• 2px and 2py

• 1s and 2s

• 1s and 2pz

What is the energy relationship between 2px and 2py orbitals?

• Both have the same energy

• 2px has lower energy than 2py

• 2py has higher energy than 2px

• 2px has higher energy than 2py

What is the first step in drawing a molecular orbital diagram?

• Combine atomic orbitals

• Write the molecular orbitals

• Draw the atomic orbitals

• Calculate bond order

How many electrons can the 2p orbitals accommodate in total?

• Six electrons

• Two electrons

• Four electrons

• Eight electrons

Why do the 1s orbitals of oxygen not combine to form molecular orbitals?

• They are too small and lack enough energy to overlap

• They are nonbonding by nature

• They have too much energy

• They are already filled

What is the total number of electrons in the molecular orbitals of an oxygen molecule?

• 8 electrons

• 10 electrons

• 12 electrons

• 14 electrons

What is the bond order of an oxygen molecule?

• 4

• 2

• 3

• 1

Why is oxygen considered paramagnetic?

• It has no unpaired electrons

• It has two unpaired electrons

• It forms a single bond

• It has a high bond order