IGNOU MCH-016 Inorganic Chemistry 2 · 2026–27 Session
MCH-016 introduces
students to advanced concepts of Inorganic Chemistry, focusing on the
chemistry of coordination compounds, transition elements, organometallic
compounds, bioinorganic chemistry, and important inorganic reactions and
applications.
The course helps students develop a deeper understanding of the structure, bonding, properties, and reactivity of inorganic compounds and explores their applications in biological systems, catalysis, materials, and industry.
|
Course
Code |
Applicable
Session |
Maximum
Marks |
Assignment
Code |
|
MCH-016 |
2026–27
Session |
100 |
MCH-011/TMA/2026-2027 |
Key Areas of Study in
MCH-016:
1. Transition
Elements – Study the electronic configuration, oxidation
states, magnetic properties, and chemical behaviour of transition elements.
2. Coordination
Chemistry – Understand coordination compounds, bonding
theories, stability, isomerism, and the properties of coordination complexes.
3. Organometallic
Chemistry – Study compounds containing metal–carbon bonds,
their structures, bonding, reactions, and applications in catalysis.
4. Bioinorganic
Chemistry – Explore the role of metal ions in biological
systems, including metalloproteins, metalloenzymes, and biologically important
coordination compounds.
5. Inorganic
Reaction Mechanisms and Catalysis – Understand important
reaction mechanisms in inorganic chemistry and the role of metal complexes in
catalytic processes.
6. Applications
of Inorganic Chemistry – Study the applications of
inorganic compounds and complexes in medicine, industry, catalysis, materials
science, and biological systems.
IGNOU MCH-016 Inorganic
Chemistry 2 | SOLVED ASSIGNMENT 2026-27
Note: Attempt
all questions. The marks for each question are indicated against it.
Q1. a) What are the kinetic consequences of reaction pathways like
dissociation, interchange and association for substitution reactions.
b) Arrange
the following in order of increasing rate of water exchange:
[Ti(H2O)6]3+, [Co(H2O)6]2+,
[Cr(H2O)6]3+, [Zn(H2O)6]2+
Justify
your answer.
Q2. a) Explain the conjugate base (CB) mechanism, that is the base
catalyzed hydrolysis. Give suitable diagrams for this. Give one example where
hydrolysis leads to complete retention of configuration in which there is
deprotonation of the amino group.
b) Why are
polydentate complexes more theromodynamically stable than their monodentate
counterparts? Explain the Ray-Dutt (rhomboid) twist mechanism for
intramolecular racemization.
Q3. a) Explain the mechanism of dissociation and stereochemical
changes for cis-[M(LL)2BX] with the help of suitable diagrams.
b) With the
help of a suitable example explain the role of the entering group in the
substitution of square planar complexes.
Q4. a) Give the situations when dissociate mechanism would be
predicted for substitution in octahedral complexes.
b) If we
compare the four-coordinate complexes Cd–N₂S and Cd–N₂O, the former undergoes
stereochemical inversion more rapidly than the latter. What is the most
probable reason for this behaviour?
Q5. a) Comment on ligands reducibility, electron transfer and the
rate constants for the reaction:
[Co(NH3)5(L)]2+ + [Fe(H2O)6]2+
→ Co2+ + H2O + 5NH3 + [Fe(H2O)5(L)]2+
b) What are
mixed valence complexes? How are the oxidation states of the metal centres in
such complexes categorized in the case of electron transfer reaction?
Q6. a) What structural features make siderophores highly selective
for Fe(III)? Why are they also known as siderochromes? Why is Fe(III) more
commonly transported by siderophores than Fe(II)?
b) Explain
why iron in hemerythrin does not bind oxygen through a heme group. Explain the
oxidation state changes that occur during oxygen binding in hemerythrin.
Q7. a) What are the common types of iron–sulfur clusters found in
ferredoxins? Where are the iron sulphur proteins located? How do ferredoxins
differ from rubredoxin?
b) Discuss the coordination environment of Mg(II) in chlorophyll and compare it
with Fe(II) in hemoglobin. Explain how transition metal ions participate in
photosynthetic electron transfer.
Q8. a) Describe the mechanism of oxygen evolution from water in
Photosystem II. Discuss the structure of the active site of carboxypeptidase A.
b) Discuss
the mechanism of proton transfer in carbonic anhydrase.
Q9. a) Explain the way metal complexes may be use to probe the local
conformational changes that may happen in the nucleic acid polymers.
b) What are
the two main types of transition-metal complex reactions with polynucleotides?
Give suitable examples and chemical equations for them.
Q10. a) What are the differences between Hypernatremia and
Hypokalemia? Give the diseases that may arise due to deficiency of zinc.
b) How have metals been used for MRI? Give a short account.
Frequently Asked
Questions
Question 1. What is
MCH-016?
Answer:
MCH-016 is an IGNOU course titled Inorganic Chemistry 2. It focuses on
advanced concepts of inorganic chemistry, including transition elements,
coordination chemistry, organometallic chemistry, bioinorganic chemistry, and
inorganic reaction mechanisms.
Question 2. What is the
course code for MCH-016?
Answer:
The course code is MCH-016.
Question 3. What is the
assignment code for MCH-016?
Answer:
The assignment code mentioned for the 2026–27 session is MCH-011/TMA/2026-2027.
Question 4. How many
marks is the MCH-016 assignment worth?
Answer: The
MCH-016 assignment carries a maximum of 100 marks.
Question 5. Which topics
should students focus on for MCH-016?
Answer:
Students should focus on Transition Elements, Coordination Chemistry,
Coordination Compounds, Organometallic Chemistry, Bioinorganic Chemistry,
Metalloenzymes, Inorganic Reaction Mechanisms, Catalysis, and Applications of
Inorganic Compounds.
Question 6. Why is
MCH-016 important?
Answer: MCH-016
helps students develop an advanced understanding of inorganic chemistry and its
applications in areas such as coordination chemistry, catalysis, medicine,
biological systems, materials science, and industry.
Need help preparing for
MCH – 016?
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