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Molecular Orbital Diagrams

Total questions: 10

Worksheet time: 9mins

Name
Class
Date
1.

Which statement is false? A sigma molecular orbital

a)

may result from overlap of p atomic orbitals perpendicular to the molecular axis (side-on)

b)

may result from overlap of p atomic orbitals along the molecular axis (head-on)

c)

may result from overlap of two s atomic orbitals

d)

may result from overlap of one s and one p atomic orbitals

2.

Significance of bond order

a)

To indicate bond strength

b)

To indicate bond length

c)

To indicate the existence of a molecule

d)

All of the mentioned

3.

According to Molecular Orbital Theory, the shape and size of a molecular orbital depends upon _________

a)

Shape and size of the combining atomic orbitals

b)

Numbers of the combining atomic orbitals

c)

Orientation of the combining atomic orbitals

d)

All of the mentioned

4.

Choose the incorrect statement from the following options.

a)

In bonding molecular orbital, electron density is low in the region between the nuclei of bonded atoms

b)

The energy of antibonding molecular orbital is higher than that of atomic orbitals from which it is formed

c)

Every electron in bonding molecular orbital contributes toward stability of the molecule

d)

Antibonding takes place when lobes of atomic orbitals have different signs

5.

The filling of molecular orbital takes place according to __________

a)

The Aufbau Principle

b)

Pauli Exclusion Principle

c)

Hund’s rule of maximum multiplicity

d)

All of the mentioned

6.

Antibonding molecular orbitals are produced by

a)

constructive interaction of atomic orbitals.

b)

destructive interaction of atomic orbitals.

c)

the overlap of the atomic orbitals of two negative ions

d)

none of these

7.

Choose the correct statement regarding magnetism

a)

Paramagnetic substances are weakly attracted to an applied magnetic field

b)

Diamagnetic substances are weakly attracted to an applied magnetic field

c)

Paramagnetic substances are weakly repelled to an applied magnetic field

d)

All of the mentioned

8.

Give the orbital designation

a)

π2p

b)

π*2p

c)

σ1s

d)

σ*1s

9.

Give the orbital designation.

a)

σ2p

b)

π2p

c)

σ*2p

d)

π*2p

10.

Give the orbital designation.

a)

π2p

b)

π*2p

c)

σ2p

d)

σ*2p