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Practice D And F Block Elements MCQ for Class 12 Chemistry

Q: 9. What is the difference between d-block and f-block elements in the periodic table?

D-block elements (transition metals) are found in periods 4-7 and groups 3-12, whereas f-block elements (lanthanides and actinides) reside separately at the bottom. Key differences include:D-block: Incomplete d-orbitals, multiple oxidation states, often colored compoundsF-block: Incomplete 4f/5f orbitals, more uniform +3 oxidation state, lanthanoid/actinoid contraction, less variable chemistry

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What Are the Key Properties and Examples of D and F Block Elements?

Looking for focused NEET Chemistry MCQ practice on d and f block elements? This page presents 20 high-quality D and F Block Elements MCQs for NEET, designed to target tricky concepts, trends, and questions commonly asked in NEET 2026. Perfect for assessing readiness, boosting accuracy, and mastering one of the heavier topics in the NEET chemistry syllabus.

What are MCQs for D and F Block Elements?

Multiple Choice Questions (MCQs) on D and F Block Elements challenge your understanding of transition and inner transition elements. These MCQs test electronic configurations, oxidation states, properties, colored ions, and trends— essential for reliable NEET Chemistry scoring. Practicing diverse D and F Block Elements MCQ formats mimics the exam pattern and boosts retention.

Why Practice NEET MCQs on D and F Block Elements?

Practicing NEET MCQs on d and f block elements tests not just memory, but deep conceptual understanding. These NEET-level questions improve speed, accuracy, and ability to recognize exam patterns. Mastering d-block and f-block Chemistry MCQs with answer keys optimizes your performance and builds confidence for NEET’s high-weightage questions.

Practice MCQs: D and F Block Elements for NEET

Which d-block element exhibits the maximum number of oxidation states?
A. Chromium
B. Iron
C. Manganese
D. Zinc
Lanthanoid contraction mainly results from:
A. Poor shielding by 4f electrons
B. Increase in nuclear charge
C. Presence of d electrons
D. Increase in atomic number only
Which one forms a colorless ion in aqueous solution?
A. Fe²⁺
B. Mn²⁺
C. Zn²⁺
D. Cu²⁺
The highest oxidation state in f block elements is shown by:
A. Uranium
B. Lanthanum
C. Cerium
D. Thorium
Which 3d-series transition metal shows strongest paramagnetism in its +2 state?
A. Co
B. Ni
C. Mn
D. Fe
The general outer electronic configuration of d-block elements is:
A. (n-1)d^1–10 ns^1–2
B. ns² np⁶ nd^1–10
C. ns² (n-1)d^1–10
D. ns² np⁶
Which is not correct about transition metals?
A. Mostly colored ions
B. Variable oxidation states
C. All are paramagnetic
D. All have incompletely filled d-orbitals
Which is the last element of the 3d series?
A. Mn
B. Ni
C. Cu
D. Zn
Color in transition metal complexes is mainly due to:
A. p–d transitions
B. d–d transitions
C. Charge transfer
D. Spin pairing
In aqueous solution, Cu²⁺ is blue due to:
A. d–d transition
B. s–p transition
C. p–p transition
D. Charge transfer
Among actinoids, actinium has:
A. 4f electrons
B. 5f electrons
C. 6d electrons
D. None of these
Which transition metal is most abundant in Earth's crust?
A. Fe
B. Cu
C. Zn
D. Mn
The stable oxidation state of lanthanides is:
A. +1
B. +2
C. +3
D. +4
Which is not an f-block element?
A. Cerium
B. Uranium
C. Zinc
D. Neodymium
Lanthanoid contraction affects:
A. Atomic size only
B. Chemical reactivity of all elements
C. Basicity differences between lanthanides
D. Color of compounds only
Which ion is NOT colored in aqueous solution?
A. Sc³⁺
B. Fe²⁺
C. Cu²⁺
D. Cr³⁺
Among these, the element with electron configuration [Xe] 4f¹⁴ 5d¹⁰ 6s¹ is:
A. Platinum
B. Gold
C. Mercury
D. Lanthanum
Of the following, oxidation state +7 is shown by:
A. Chromium
B. Manganese
C. Iron
D. Copper
Transition metals form alloys due to:
A. Large atomic radii
B. Similar size and variable valency
C. High electronegativity
D. Low electronegativity
The actinoid series starts from:
A. Lanthanum
B. Thorium
C. Actinium
D. Uranium

MCQ Answer Key

Q.No.	Answer	Explanation
1	C	Manganese shows up to +7 oxidation state, max among d-block.
2	A	Poor 4f shielding in lanthanides causes contraction.
3	C	Zn²⁺ ion has filled d-subshell and is colorless.
4	A	Uranium shows up to +6 oxidation state in actinoids.
5	C	Mn²⁺ has 5 unpaired electrons, most paramagnetic.
6	A	d-block: (n-1)d^1–10 ns^1–2 is general configuration.
7	C	Some transition elements are diamagnetic (like Zn), not all paramagnetic.
8	D	Zinc is the last 3d series element (atomic number 30).
9	B	Color arises from d–d electron transitions in complexes.
10	A	Cu²⁺ in water is blue due to d–d transitions.
11	C	Actinium has outermost 6d electrons (not 4f or 5f).
12	A	Iron (Fe) is the most abundant transition metal in the crust.
13	C	+3 is the stable and common oxidation state for lanthanides.
14	C	Zinc is a d-block, not an f-block element.
15	C	Lanthanoid contraction causes basicity difference among lanthanides.
16	A	Sc³⁺ has no d-electrons, so it is colorless.
17	B	Gold has [Xe] 4f¹⁴ 5d¹⁰ 6s¹ configuration.
18	B	Manganese shows +7 (as in KMnO₄) oxidation state.
19	B	Mixing/packing of similar sized atoms and variable valency forms alloys.
20	B	Actinoid series starts with Thorium (Z=90) after Actinium.

Explanations clarify reasoning behind each answer and help students understand important NEET concepts.

How These D and F Block MCQs Help in NEET

Solving D and F Block Elements MCQ for NEET identifies strengths and pinpoints gaps. These vetted NEET Chemistry MCQs simulate real exam style, enhance conceptual recall, boost speed, and strengthen score potential. For full MCQ revision and analytics, explore chapterwise chemistry mock tests and actual NEET PYQs with Vedantu.

Next Steps and Proven D & F Block Elements Prep Tips

Create quick revision notes for oxidation states and colored ions.
Target more D and F Block Elements MCQ for NEET at Vedantu’s practice page.
Use revision notes and concept summaries before full-topic mocks.
Time yourself to improve MCQ accuracy under stress.
Align with NEET Chemistry weightage using official chapterwise marks data.

Practicing these D and F Block Elements MCQs sharpens NEET Chemistry skills. Each question is based on exam trends, ensuring readiness for NEET 2026 and beyond. Continue regular MCQ practice and check Vedantu resources to master this crucial topic for better scores and confidence.

FAQs on Practice D And F Block Elements MCQ for Class 12 Chemistry

1. How many MCQs from d and f block elements appear in NEET?

D and f block elements usually contribute 2–3 MCQs in the NEET Chemistry section each year. These are chapterwise questions that test core concepts like oxidation states, electronic configuration, colored ions, and trends of d-block and f-block elements. Prioritizing such high-weightage NEET Chemistry MCQs helps boost your score.

2. What are d-block and f-block elements?

D-block elements are transition elements in the periodic table from groups 3 to 12, while f-block elements include the lanthanoids and actinoids, also called inner transition elements. Their distinguishing features include:

D-block: Incomplete d-orbitals, variable oxidation states, colored compounds
F-block: Filling of 4f (lanthanides) and 5f (actinides) sub-shells, lanthanoid contraction, mostly +3 oxidation state

3. Can I download a d and f block elements MCQ PDF for NEET?

Yes, many educational platforms provide d and f block elements NEET MCQ PDFs for free download. These PDFs include:

NEET-standard multiple-choice questions
Answer keys with solutions
Topic-wise summaries for d-block and f-block elements
Practice sets for revision

4. What is the best way to practice NEET d and f block MCQs?

The most effective approach is to practice chapterwise MCQ tests in a timed, exam-like manner. Follow these steps:

Attempt topic-based quizzes (d-block, f-block) under time limits
Review answer keys and explanations
Analyze mistakes using performance analytics
Revise weak areas and attempt previous year NEET questions

5. Do these NEET Chemistry MCQs have an answer key?

Yes, all NEET d and f block elements MCQ practice sets come with detailed answer keys and explanations. This helps students:

Verify correct answers
Understand solutions step by step
Clarify doubts in inorganic chemistry topics
Strengthen concepts for NEET revision

6. Are Vedantu’s d and f block element tests chapterwise?

Yes, the MCQ practice tests for d and f block elements on Vedantu are chapterwise. Each topic (d-block, f-block) is covered separately to maximize learning and reinforce NEET Chemistry concepts through focused preparation.

7. What is lanthanoid contraction and why is it important in NEET?

Lanthanoid contraction refers to the gradual decrease in ionic radii of lanthanide series elements from La to Lu due to poor shielding of the 4f electrons. It is important in NEET because:

Affects chemical behavior and properties of subsequent elements
Explains similarity between 2nd and 3rd transition series
Frequently asked as a concept or one-line MCQ

8. How can I improve speed and accuracy in d and f block NEET Chemistry questions?

To enhance speed and accuracy in NEET d and f block questions:

Practice timed mock tests and quizzes
Make flashcards for electronic configurations and key trends
Revise previous NEET year questions and focus on exceptions
Quickly jot down key oxidation states and compounds for last-minute glance

9. What is the difference between d-block and f-block elements in the periodic table?

D-block elements (transition metals) are found in periods 4-7 and groups 3-12, whereas f-block elements (lanthanides and actinides) reside separately at the bottom. Key differences include:

D-block: Incomplete d-orbitals, multiple oxidation states, often colored compounds
F-block: Incomplete 4f/5f orbitals, more uniform +3 oxidation state, lanthanoid/actinoid contraction, less variable chemistry

10. How do I use the answer keys efficiently for NEET revision?

Efficient answer key use helps strengthen NEET d and f block preparation:

Check and reflect on incorrect answers immediately
Highlight recurring mistakes or weak concepts
Review explanations to clarify fundamentals
Add tough or tricky MCQs to short revision notes

11. Which d-block element forms the most oxidation states?

Manganese (Mn) forms the largest number of oxidation states among d-block elements. It ranges from +2 to +7 but +2 and +7 are most common. This property is significant in NEET MCQs for transition elements and redox chemistry.

12. What topics are important from d and f block elements for NEET MCQs?

Key NEET topics from d and f block elements include:

Electronic configuration and periodic trends
Variable oxidation states
Color and magnetic properties of compounds
Lanthanoid contraction and consequences
Co-ordination chemistry basics
Exceptions and anomalies among oxidation states