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Crystal field theory

Total questions: 12

Worksheet time: 9mins

Name
Class
Date
1.

1. CFT views the interaction between metal ions and ligands in complexes in terms of electrostatic _______________ and ____________________.

a)

attraction, repulsion

b)

positive, negative

c)

cation, anion

2.

Which orbital is very important in CFT?

a)

orbital p

b)

orbital s

c)

orbital d

3.

When the ligands move along the x, y and z axes of d orbital in metal ion (octahedral geometry), they approach directly toward or between the lobes. Name the d orbitals that feel less repulsion?

a)

dz2 and dx2- y2

b)

dxy, dxz and dyz

c)

dz2

d)

dxy and dxz

4.

When the ligands move along the x, y and z axes of d orbital in metal ion (octahedral geometry), they approach directly toward or between the lobes. Name the d orbitals that feel strong repulsion?

a)

dz2 and dx2- y2

b)

dxy, dxz and dyz

c)

dz2

d)

dxy and dxz

5.

When the ligands move along the x, y and z axes of d orbital in metal ion (tetrahedral geometry), none of the five d orbitals is directly in their path. Name the d orbitals that feel strong repulsion?

a)

dz2 and dx2- y2

b)

dxy, dxz and dyz

c)

dz2

d)

dxy and dxz

6.

When the ligands move along the x, y and z axes of d orbital in metal ion (tetrahedral geometry), none of the five d orbitals is directly in their path. Name the d orbitals that lower energy

a)

dz2 and dx2- y2

b)

dxy, dxz and dyz

c)

dz2

d)

dxy and dxz

7.

The energy diagram of the d orbital energy splitting complexes in octahedral geometry, shows the d orbitals with higher in energy (eg) which refer to _____________ d orbitals

a)

dz2

b)

dxy, dxz and dyz

c)

dz2 and dx2- y2

d)

dxy and dxz

8.

The energy diagram of the d orbital energy splitting complexes in tetrahedral geometry, shows the d orbitals with higher in energy (t2g) which refer to _____________ d orbitals

a)

dz2

b)

dxy, dxz and dyz

c)

dz2 and dx2- y2

d)

dxy and dxz

9.

The splitting of orbital energies is called the crystal field effect

a)

True

b)

False

10.

1 delta is similar to 10 Dq

a)

true

b)

false

11.

Crystal field strength of the ligand is inverse proportional to splitting energy

a)

true

b)

false

12.

Strong field ligand is which give small splitting energy

a)

true

b)

false