d and f Block Elements NEET Previous Year Question Paper Analysis (2020-2026)

d and f Block Elements NEET PYQ Analysis (2020-2026)

This NEET PYQ analysis for d and f Block Elements chapter shows how important the chapter is for the NEET exam and the type of questions that have been asked in the recent past. Going through the analysis of each chapter helps candidates to know the topics carrying NEET chemistry chapter-wise weightage, the difficulty level of the questions, and how to revise them effectively. Below is the table showing the number of questions asked from the d and f Block Elements chapter in NEET 2020-2026.

What does the NEET d and f Block trend indicate?

The trend gives rise to the following three key observations:

• Firstly, the chapter maintains its consistent appearance in NEET Chemistry.
• The number of questions asked can differ widely between different years.
• Candidates must revise the whole NCERT chapter without relying on any preconceived number of expected questions.

According to Careers360's wider analysis of Chemistry between 2021 and 2026, "d and f Block Elements" holds 4.25% weightage in total, thus making it an important chapter for revision of Inorganic Chemistry.

Download of d and f block elements NEET PYQ PDF

Accessing the PDF of the previous year's questions can help aspirants a lot. Students who don’t want to waste time searching for d and f block elements NEET PYQ are at the right place. Careers360 has provided the PDF, which can be accessed easily without the internet. Solving these, along with the NEET question papers, can increase the scores to a large extent.

Understanding the Basics of d and f Block Elements

In the NEET exam, NTA mainly asks concept-based questions. So, before solving the NEET d and f block elements previous year questions, it is important to know the basics. Students can refer to the NCERT books for NEET to build a strong foundation. Apart from that, there are two main points to know the basics of d and f block elements. These points are mentioned below:

1. The electronic configuration of any element is like its fingerprint. It shows how the electrons are arranged in a definite manner. For d-block elements, the general configuration is $(n-1)d^{1-10}\,ns^{0-2}$
2. The d-block elements exhibit variable oxidation states. They form coloured ions and show catalytic properties.

D-Block Elements (transition elements)

The d-block elements have an incomplete d-subshell in their neutral atom or ions. Their general electronic configuration is $(n-1)d^{1-10}ns^{0-2}$. Transition elements show variable oxidation states and exhibit catalytic properties. D-block elements are also good conductors of heat and electricity.

F- Block elements (inner transition elements)

The f-block elements are also known as inner transition elements. The general electronic configuration of F block elements is $(n-2)f^{1-14}(n-1)d^{0-1}ns^2$.

• Lanthanoids – show electronic configuration, variable oxidation states, and lanthanoid contraction.
• Actinoids – show electronic configuration and variable oxidation states.

Some d and f block elements NEET PYQ

Solving the NEET PYQs on d and f Block Elements is one of the best ways to prepare for the NEET examination. The PYQs help the candidates get acquainted with the examination pattern and the areas from where the maximum number of questions are asked. It will also ensure that candidates are accurate while solving questions based on NCERT for the subject of Chemistry. Besides solving PYQs, the candidates need to revise important NEET chemistry formulas, oxidation states, electronic configuration, and reactions from this chapter.

Question 1:

The green paramagnetic species formed by heating KMnO₄ at 513 K is: (NEET 2026)

Option 1) Mn₃O₄

Option 2) MnO

Option 3) KO₂

Option 4) K₂MnO₄

Chapter: d and f Block Elements

Correct Answer: Option 4

Explanation:

On strong heating, KMnO₄ (above 513 K), it decomposes as:

$2KMnO_4 \xrightarrow{\Delta} K_2MnO_4 + MnO_2 + O_2$

K₂MnO₄ (potassium manganate) is the green, paramagnetic product formed, since Mn is in the +6 oxidation state (d¹ configuration, one unpaired electron).

Hence, the answer is option (4).

Question 2

Given below are two statements:

Statement I: Ferromagnetism is considered an extreme form of paramagnetism.

Statement II: The number of unpaired electrons in a $\text{Cr}^{2+}$ ion ($Z = 24$) is the same as that of a $\text{Nd}^{3+}$ ion ($Z = 60$).

In light of the above statements, choose the correct answer from the options given below. (NEET 2025)

Options

1. Statement I is false, but Statement II is true
2. Both Statement I and Statement II are true
3. Both Statement I and Statement II are false
4. Statement I is true, but Statement II is false

Answer:

Statement I is true because ferromagnetism is an extreme form of paramagnetism.

$\text{Cr}^{2+}: [Ar],3d^4 \rightarrow 4$ unpaired electrons

$\text{Nd}^{3+}: [Xe],4f^3 \rightarrow 3$ unpaired electrons

Therefore, Statement II is false.

Correct Answer: Option 4) Statement I is true, but Statement II is false.

Question 3

Among $\text{VO}_2^+$, $\text{MnO}_4^-$ and $\text{Cr}_2\text{O}_7^{2-}$, the spin-only magnetic moment value of the species with the least oxidising ability is ______ BM. (Nearest integer)

(Given atomic numbers: $V = 23$, $Mn = 25$, $Cr = 24$). (NEET 2024)

Options

1. 0
2. 1
3. 2
4. 3

Answer:

For the $3d$ transition series:

Oxidising power:

$\text{V}^{5+} < \text{Cr}^{6+} < \text{Mn}^{7+}$

$\text{V}^{5+}: [Ar],3d^0$

Number of unpaired electrons $= 0$

$\mu = 0\ \text{BM}$

Correct Answer: Option 1) 0

Question 4

The stability of $\text{Cu}^{2+}$ is more than $\text{Cu}^+$ salts in aqueous solution due to: (NEET 2023)

Options

1. First ionisation enthalpy
2. Enthalpy of atomization
3. Hydration energy
4. Second ionisation enthalpy

Answer:

$\text{Cu}^{2+}$ is more stable than $\text{Cu}^+$ in aqueous solution because of its higher hydration energy.

Correct Answer: Option 3) Hydration energy

Question 5

In a neutral or faintly alkaline medium, $\text{KMnO}_4$ oxidises iodide into iodate. The change in oxidation state of manganese in this reaction is from: (NEET 2022)

Options

1. $+6$ to $+4$
2. $+7$ to $+3$
3. $+6$ to $+5$
4. $+7$ to $+4$

Answer:

In a neutral or faintly alkaline medium:

$\text{MnO}_4^- \rightarrow \text{MnO}_2$

Oxidation state of Mn changes from $+7$ to $+4$.

Correct Answer: Option 4) $+7$ to $+4$

Question 6

$\text{Zr}$ ($Z = 40$) and $\text{Hf}$ ($Z = 72$) have similar atomic and ionic radii because of: (NEET 2021)

Options

1. Belonging to the same group
2. Diagonal relationship
3. Lanthanoid contraction
4. Having similar chemical properties

Answer:

$\text{Zr}$ and $\text{Hf}$ have nearly identical atomic and ionic radii due to the lanthanoid contraction.

Correct Answer: Option 3) Lanthanoid contraction

How Many Questions Are Asked From d and f Block Elements in NEET?

The number of questions which the chapter includes every year is not fixed. According to the latest trends revealed by Careers360, the chapter has generated one to three questions in the papers from 2021 to 2026, depending upon the classification process of each year's paper.

In this way, the chapter should be considered by the candidates as a consistent chapter of variable weightage.

NEET 2027 d and f Block Elements Important Topics

Having an understanding of important topics gives preparation the right direction. Candidates are advised to study from the best NEET chemistry books to know the basics. After that, it becomes easy to solve the d and f block elements questions in NEET. Students thinking of how to study chemistry for NEET can use a systematic approach. Given below is a table of topics that are covered in the d and f block elements NEET PYQ.