Worksheets3.4 Transition metal complexes
Total questions: 12
Worksheet time: 15mins
Name
Class
Date
1.
If red/orange region is absorbed, what is the color that we see. Refer to color wheel
a)
Red
b)
Orange
c)
Blue
d)
Yellow
2.
If violet region is absorbed, what is the color that we see. Refer to color wheel
a)
Violet
b)
Orange
c)
Blue
d)
Yellow
3.
Color of metal complexes are due to the following factors EXCEPT
a)
Types of ligands
b)
Nature of transition metal
c)
Oxidation states
d)
Type of orbitals
4.
3d orbitals are degenerate. What does it means?
a)
All 3d orbitals are in same order
b)
All 3d orbitals have different electron arrangement
c)
All 3d orbitals are in the same energy level
d)
All 3d orbitals have the same shape
5.
Ti3+ solution in the presence of water, is violet in color. Why?
a)
Presence of water ligands cause color formation
b)
Electron can be excited
c)
Wavelength of light can be absorbed
d)
Presence of water ligand cause the splitting the 3d orbitals
6.
Sc3+ solution in the presence of water is colorless. Why?
a)
Presence of ligands cause the splitting of 3d orbital.
b)
There is no splitting of 3d orbitals
c)
There is no electrons to be excited
d)
Energy level is too high for electron to reach
7.
Zn2+ solution in the presence of water is colorless. Why?
a)
Presence of ligands cause the splitting of 3d orbital.
b)
There is no splitting of 3d orbitals
c)
There is no electrons to be excited
d)
3d orbitals are fully filled and no electrons can be excited
8.
Cu2+ solution in the presence of water is blue. Why?
a)
Splitting of 3d orbital and electron can be easily excited
b)
Blue light is aborbed to excite elec to higher energy level
c)
Blue light is emitted when elec move to lower energy level
d)
3d orbital are partially filled and electrons can be excited
9.
The following statements are true about spectrochemical series EXCEPT
a)
CN- ion is the strongest ligand
b)
Strong ligand displaces weak ligand
c)
Strong ligand causes greater split in 3d orbital
d)
Weak ligand will not split the 3d orbital
10.
Strong ligand causes a greater split of 3d orbital because
a)
greater repulsion between ligands and 3d electrons
b)
strong ligand has greater energy
c)
strong ligand causes a greater displacement
d)
strong ligand has greater electron density
11.
V5+ causes a greater split than Fe3+. Why?
a)
Stronger ESF between nucleus and ligands
b)
Weaker ESF between nucleus and ligands
c)
Stronger ESF between nucleus and ligand cause greater repulsion
d)
Weaker ESF bet nucleus and ligand cause weaker repulsion
12.
Which of the following have the greatest ΔE splitting of 3d orbitals?
a)
A
b)
B
c)
C
100 %
