MCH-011 Solved Assignment 2026-27 in English | M.Sc Chemistry

The MCH-011 Solved Assignment 2026-27 in English is prepared for students of the IGNOU M.Sc Chemistry programme studying Inorganic Chemistry – I. This digital PDF provides structured reference material based on the applicable MCH-011 assignment questions and supports students during their assignment preparation.

The assignment covers important areas of inorganic chemistry, including VSEPR theory, inorganic aromaticity, phosphazene polymers, organotransition metal compounds, metal carbonyls, dinitrogen complexes, Jahn-Teller effect, lanthanoid magnetic properties and Racah parameters.

MCH-011 Inorganic Chemistry – I Course Information

The uploaded Tutor Marked Assignment lists MCH-011 as Inorganic Chemistry 1, carries a maximum of 100 marks and instructs students to attempt all questions.

MCH-011 Solved Assignment Overview

Inorganic Chemistry – I deals with several important concepts used to understand the structure, bonding and behaviour of inorganic compounds. The assignment combines theoretical questions with chemical equations, diagrams and numerical calculations. MCH-011 Solved Assignment 2026-27 in English

The questions cover VSEPR theory, inorganic aromaticity and phosphazene polymers. In addition, students need to study organotransition metal alkyls and aryls, fluxional organometallic compounds, metal carbonyl bonding and dinitrogen complexes.

Furthermore, the assignment includes molybdenocene, heterocarboranes, Jahn-Teller distortion, electronic configurations and lanthanoid magnetic properties. The final questions focus on antiferromagnetism, Racah parameters and the octant rule.

MCH-011 Assignment Questions

Course Code: MCH-011

Course Title: Inorganic Chemistry – I

Assignment Code: MCH-011/TMA/2026-27

Maximum Marks: 100

Note: Attempt all questions. The marks for each question are indicated against it.

Question 1

a) Explain the trends in melting points of alkali, alkaline earth and transition metals of fourth, fifth and sixth periods along with suitable illustration.

(5)

b) Give the second postulate of VSEPR theory. Predict at the structure of the molecule sulfur tetrafluoride with the help of VSEPR theory. Draw the structure.

(5)

Question 2

a) Which ones of the following species will exhibit inorganic aromaticity: a) S₃N₃⁻ b) S₄N₃⁺ c) S₅N₅? Justify your answer.

(5)

b) With the help of suitable chemical equations explain how the mixed-substituent polymers of phosphazenes are synthesized?

(5)

Question 3

a) Give the classification of organotransition metal alkyls and aryls along with suitable examples for each type.

(5)

b) With the help of a suitable example explain what fluxional organanometallic compounds are. With the help of NMR studies how their presence was confirmed?

(5)

Question 4

a) Calculate the Effective Atomic Number (EAN) of the Mn(CO)₄NO complex. Here how is the ligand NO treated as? In this was how the ligand NO becomes analogous to CO and N₂?

(5)

b) With the help of suitable diagrams, explain the synergic bonding in metal carbonyls.

(5)

Question 5

a) Which metals form dinitrogen complexes? Which other ligands can coexist in a nitrogen metal complex? Give any two examples of such complexes are prepared by using nitrogen gas directly. Give suitable chemical equations.

(5)

b) How are dioxygen adducts of cobaltocenes prepared?

(5)

Question 6

a) Give an example of a transition metal-dinitrogen complex. Give suitable chemical equation for its preparation. In what fashion can the two metal atoms be bridged by dinitrogen? What happens when the dinitrogen ligands bind in side-on mode? Gives suitable diagrams.

(5)

b) With the help of suitable diagram explain the Tolman cone angle in phosphines.

(5)

Question 7

a) Give a suitable chemical equation for the preparation of molybdenocene. Gives its reaction with ethylene.

(5)

b) What are heterocarboranes? Which elements are involved in it? With suitable equation give the preparation of any one multidecker metal sandwich complexes.

(5)

Question 8

a) What is Jahn Teller effect? As a manifestation of it show why high-spin d⁴ (e.g., Cr²⁺) and low-spin d⁷ six-coordinate complexes (e.g. Co²⁺) may show distortion.

(5)

b) Give the octahedral as well as tetrahedral field electronic configuration for the Cr³⁺ and Mn²⁺ ions. Which site will be preferred by these ions, octahedral or tetrahedral? Justify your answer.

(5)

Question 9

a) With the help of a suitable diagram explain the trend of paramagnetic moments of La³⁺ and the lanthanoid ions at 300K. Why is the chance of superexchange interaction less in lanthanoid complexes?

(5)

b) With a suitable example explain intermolecular antiferromagnetism. Give its mechanism for the case of direct metal-metal interaction. Give suitable illustrations.

(5)

Question 10

a) What are Racah parameters? What do they signify? The gas-phase ion V³⁺ has a ³F ground term. The ¹D and ³P terms lie, respectively, 10,642 and 12,920 cm⁻¹ above it. The energies of the terms are given in terms of Racah parameters as E(³F) = A-8B, E(³P)=A+7B, E(¹D) = A-3B+2C. Calculate the values of B and C for V³⁺.

(5)

b) What is meant by the octant sign? How can you follow the octant rule to determine the absolute configuration of cyclic ketones? How do we confirm whether a complex is Δ-isomer or Λ-isomer?

(5)

What Does This MCH-011 Solved Assignment PDF Include?

This digital PDF provides structured reference material for the complete MCH-011 assignment. It covers all questions given in the applicable Tutor Marked Assignment and follows the 2026–27 assignment session.

The material is useful for studying concepts before preparing the final assignment. Moreover, the digital format makes it convenient to access the reference PDF from a mobile phone, tablet, laptop or desktop.

Key Features for MCH-011 Solved Assignment 2026-27 in English

• MCH-011 Inorganic Chemistry – I
• 2026–27 assignment
• English Medium
• Complete question coverage
• Structured reference answers
• Digital PDF format
• Instant download
• Mobile and desktop friendly
• Useful for academic reference

Who Can Use the MCH-011 Assignment?

This assignment is intended for students enrolled in the M.Sc Chemistry programme who have MCH-011: Inorganic Chemistry – I in their course structure.

Students should check their course code, assignment session and medium before purchasing to ensure that the product matches their academic requirements.

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Frequently Asked Questions

1. What is MCH-011?

MCH-011 is Inorganic Chemistry – I, a course included in the IGNOU M.Sc Chemistry programme.

2. What is the assignment code for MCH-011?

The assignment code mentioned in the uploaded paper is MCH-011/TMA/2026-27.

3. Which session does this assignment cover?

This MCH-011 assignment is for the 2026–27 session.

4. Is this MCH-011 assignment available in English?

Yes. This product is prepared in English medium.

5. What is the title of MCH-011?

The course title is Inorganic Chemistry – I.

6. How many marks does the MCH-011 assignment carry?

The assignment carries a maximum of 100 marks.

7. How many questions are included?

The assignment contains 10 main questions, with two sub-parts under each question.

8. Can I access the PDF on a mobile phone?

Yes. The digital PDF can be accessed on smartphones, tablets, laptops and desktop computers.

9. Can this PDF help with MCH-011 assignment preparation?

Yes. It provides structured reference material based on the questions in the applicable MCH-011 assignment.

10. Can I get a handwritten assignment hard copy?

Yes. Students looking for a handwritten assignment can visit the Handwritten Assignment Hard Copy resource on Mother Publication.

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Mother Publication independently prepares this material for educational and reference purposes. Students should understand the content and prepare their assignments appropriately. Mother Publication is not affiliated with, endorsed by, or officially associated with IGNOU.

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