Proven Strategies to Excel in D and F Block Elements JEE Main Mock Tests
D and F Block Elements form a high-weightage chapter in JEE Chemistry, testing your understanding of transition and inner transition elements, their electronic configurations, oxidation states, and periodic trends. Ace this chapter to excel in questions relating to properties of d block and the fascinating chemistry of lanthanides and actinides. Take this dedicated mock test to master key concepts and reinforce your confidence for the JEE Main 2025.
Mock Test Instructions for the D And F Block Elements Mock Test 1:
- 20 questions from D And F Block Elements Mock Test 1
- Time limit: 20 minutes
- Single correct answer per question
- Correct answers appear in bold green after submission
How Can Mock Tests Help You Master D and F Block Elements for JEE Main?
- Identify weak areas in transition and inner transition elements through practice questions.
- Master periodic trends, electronic configurations, and oxidation states with time-based mock exams.
- Simulate real exam conditions to improve accuracy in D and F block numericals and theory.
- Boost recall of properties and exceptions among d-block and f-block elements.
- Analyse detailed solutions to avoid common mistakes in this high-weightage chapter.
Sharpen Your D and F Block Elements Problem-Solving with JEE Expert Mock Tests
- Practice advanced MCQs on lanthanides, actinides, and transition elements as per latest JEE pattern.
- Focus on the NTA syllabus by solving conceptual and previous year-type questions.
- Assess your speed and conceptual depth via detailed test analytics and instant feedback.
- Regular attempts in mock tests help retain critical formulas and trends in the d and f block chapter.
- Gain confidence for Physics-involved questions like color, magnetism, and catalysis in this topic.
Subject-Wise Excellence: JEE Main Mock Test Links
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| 1 | Online FREE Mock Test for JEE Main Chemistry |
| 2 | Online FREE Mock Test for JEE Main Maths |
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FAQs on JEE Main 2025-26 Mock Test Practice: D and F Block Elements
1. What are d-block elements?
The d-block elements, also called transition elements, are elements in which the last electron enters the d-orbital of the penultimate shell. They occupy groups 3 to 12 in the modern periodic table and include elements like Fe, Cu, Zn, and Ag.
2. What are f-block elements?
The f-block elements are elements where the added electron enters the (n-2)f orbital. These are also known as inner transition elements, and are found in the two rows at the bottom of the periodic table: lanthanides (atomic numbers 58–71) and actinides (atomic numbers 90–103).
3. Why are d-block elements called transition elements?
The d-block elements are called transition elements because their properties show a transition between the highly electropositive s-block and the less electropositive p-block elements. They often have partially filled d orbitals and display variable oxidation states.
4. Give examples of d-block elements.
Some common examples of d-block elements are Scandium (Sc), Iron (Fe), Copper (Cu), Nickel (Ni), Chromium (Cr), and Silver (Ag).
5. What are the general properties of f-block elements?
The f-block elements generally show the following properties:
• They have high melting points.
• Many are paramagnetic due to unpaired electrons.
• All are metallic in nature and are typically reactive.
• They show variable oxidation states.
• Most are rare earth elements (lanthanides) or actinides.
6. What is the electronic configuration of d-block elements?
The general electronic configuration of d-block elements is (n-1)d1-10ns0-2. The last electron enters the (n-1)d orbital, which is one energy level lower than the s orbital of the same period.
7. Why do d-block elements show variable oxidation states?
d-block elements show variable oxidation states because they have a small energy difference between their (n-1)d and ns electrons, allowing them to lose different numbers of electrons easily during chemical reactions.
8. What are some important uses of d and f-block elements?
Some important uses are:
• d-block elements are used in alloy making, catalysts (like Fe in Haber’s process), and coinage metals (Cu, Ag).
• f-block elements (lanthanides) are used in optical devices, electronic gadgets, and actinides (like U, Pu) are used in the nuclear industry.
9. What is lanthanide contraction?
Lanthanide contraction refers to the steady decrease in atomic and ionic radii of the lanthanide series elements (from La to Lu) as the atomic number increases, mainly due to poor shielding effect of the 4f electrons.
10. What are some tricks to remember d and f-block elements for exams?
To remember the d and f-block elements quickly:
• Use mnemonic devices such as: “Scary Titans Vanquish Crazy Monsters” for Sc, Ti, V, Cr, Mn (first row).
• For f-block (lanthanides), remember “La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu” as a sequence.
• Practice writing the periodic table sections regularly.
11. What is the difference between transition elements and inner transition elements?
Transition elements are d-block elements found in groups 3–12 and have partially filled d-orbitals. Inner transition elements are f-block elements (lanthanides and actinides) where the f-orbital is being filled. Both series show variable oxidation states, but f-block elements are mostly rare earth metals or radioactive.
12. Which element is not considered a transition element, although it is in the d-block?
Zinc (Zn), Cadmium (Cd), and Mercury (Hg) are not considered true transition elements because their d-orbitals are completely filled (d10) in both elemental and common oxidation states, so they do not show typical transition element properties like variable oxidation states.
