Top Tips to Score High in JEE Main 2025-26 D and F Block Elements Mock Tests
The d and f Block Elements are pivotal in JEE Chemistry, encompassing transition and inner transition elements, their electronic configurations, properties, and applications. Mastering concepts like variable oxidation states, colored ions, and coordination chemistry is essential for scoring high in competitive exams. Take this mock test to strengthen your understanding and boost your JEE preparation!
Mock Test Instructions for the d and f Block Elements:
- 20 questions from d and f Block Elements
- Time limit: 20 minutes
- Single correct answer per question
- Correct answers appear in bold green after submission
Unlock Mastery in d and f Block Elements with JEE Chemistry Mock Tests
- Attempting topic-specific mock tests reveals weaknesses in concepts such as electronic configuration and oxidation states.
- Practice d and f block problems to become familiar with complex JEE questions on colored ions and magnetic behavior.
- Focus on tricky topics like lanthanoid contraction and actinoid chemistry to improve exam confidence.
- Mock test attempts help you memorize common trends, exceptions, and important reactions for d and f block elements.
- Analyze your mistakes in test reports to revisit concepts like complex formation and catalytic properties.
Enhance Your Problem-Solving Skills in d and f Block Elements with Expert JEE Mock Tests
- Use timed mock tests to boost your speed in solving multi-concept questions on transition elements.
- Reinforce your understanding of electronic structure, periodicity, and chemical properties under exam pressure.
- Master questions on inner transition elements and their applications through repeated practice.
- Topic-wise mock tests highlight important exceptions and frequently asked JEE patterns in d and f blocks.
- Track progress and focus revision on topics where you consistently score lower in practice tests.
Subject-Wise Excellence: JEE Main Mock Test Links
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| 1 | Online FREE Mock Test for JEE Main Chemistry |
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FAQs on D and F Block Elements Mock Test for JEE Main 2025-26 Preparation
1. What are d-block elements?
d-block elements are chemical elements found in groups 3 to 12 of the periodic table. They are called transition metals, as their d-orbitals are progressively filled. Their general electronic configuration is (n-1)d1-10ns0-2. These elements exhibit variable oxidation states, form colored ions, and often act as catalysts.
2. What are f-block elements?
f-block elements are those in which the last electron enters the f-orbital. Also known as lanthanides (atomic numbers 58‒71) and actinides (atomic numbers 90‒103), they are placed separately at the bottom of the periodic table. They typically show +3 oxidation state, high atomic and ionic sizes, and form colored ions.
3. What are the differences between d-block and f-block elements?
d-block elements are transition metals found in groups 3–12 and have electrons entering d-orbitals, while f-block elements are lanthanides and actinides with electrons entering f-orbitals. d-block show variable oxidation states and high melting points, whereas f-block include rare earth metals with mainly +3 oxidation state.
4. What is the general electronic configuration of d-block elements?
The general electronic configuration for d-block elements is (n-1)d1–10ns0–2. For example, Iron (Fe) has configuration: [Ar] 3d6 4s2.
5. What are some common properties of d-block elements?
d-block elements usually exhibit metallic character, high melting and boiling points, variable oxidation states, the tendency to form colored ions, and strong paramagnetic properties. They also frequently act as catalysts and can form complex compounds.
6. Give examples of d-block elements.
Examples of d-block elements include Iron (Fe), Copper (Cu), Zinc (Zn), Chromium (Cr), Nickel (Ni), Manganese (Mn), and Silver (Ag).
7. What are the lanthanides and actinides?
Lanthanides are the 14 elements from Cerium (Ce, atomic number 58) to Lutetium (Lu, 71), and actinides are from Thorium (Th, 90) to Lawrencium (Lr, 103). Both series are collectively known as f-block elements and are placed in two separate rows below the main periodic table.
8. Why are d-block elements called transition elements?
They are called transition elements because their atoms and ions have an incomplete d-subshell or receive electrons into the (n-1)d orbitals. They lie between s- and p-blocks, showing a transition in properties in the periodic table.
9. What are some tricks to remember d- and f-block elements for exams?
To easily recall d- and f-block elements,
- Use mnemonics for transition series (like 'Scary Tigers Vibrate Chromium's Mind Fiercely, Courageously, Niobly', etc.)
- Remember lanthanides as 'La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu'
- Note the atomic numbers: 3d (21–30), 4d (39–48), 5d (57, 72–80), 6d (89, 104–112) for d-block.
10. Why do many transition metals form colored compounds?
Many transition metals form colored compounds due to d–d electronic transitions when visible light is absorbed. The presence of unpaired d-electrons causes these elements to show different colors in their ions and complexes.
11. What is the oxidation state trend in d-block elements?
The oxidation states of d-block elements vary, with elements typically showing multiple oxidation states. The maximum oxidation states generally increase from Scandium to Manganese and then decrease towards Zinc. This variation is due to the involvement of both (n-1)d and ns electrons in bonding.
12. How are d- and f-block elements important in real-life applications?
d-block elements are crucial in industrial catalysis, electronics, and metallurgy (e.g., Iron in steel, Platinum in catalytic converters). f-block elements like uranium and thorium are key in nuclear energy, and lanthanides are essential in magnets, lasers, and electronics.
