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Revision Notes
The D And F Block Elements — Revision Notes
CUET (UG) · Chemistry
Quick revision notes for The D And F Block Elements — key concepts, formulas, and definitions for CUET (UG) Chemistry preparation.
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Key concepts, formulas, and definitions from The D And F Block Elements for CUET (UG) Chemistry preparation.
Key Topics to Revise
1
Position and Electronic Configuration of d-Block Elements
- d-block elements are located between s-block and p-block in the periodic table
- General electronic configuration: (n-1)d¹⁻¹⁰ ns⁰⁻²
- Four transition series: 3d (Sc-Zn), 4d (Y-Cd), 5d (La,Hf-Hg), 6d (Ac,Rf-Cn)
2
General Properties of Transition Elements
- High melting and boiling points due to strong metallic bonding involving d-electrons
- High enthalpy of atomization due to strong interatomic interactions
- Atomic radii decrease across a period due to increasing nuclear charge and poor shielding by d-electrons
3
Important Compounds - Potassium Dichromate (K₂Cr₂O₇)
- Preparation from chromite ore (FeCr₂O₄) through fusion with Na₂CO₃ in presence of air
- Orange crystalline compound, moderately soluble in water
- Exists in equilibrium with chromate ion: Cr₂O₇²⁻ + H₂O ⇌ 2CrO₄²⁻ + 2H⁺
4
Important Compounds - Potassium Permanganate (KMnO₄)
- Preparation from pyrolusite (MnO₂) through alkaline fusion followed by electrolytic oxidation
- Deep purple crystalline compound, sparingly soluble in water
- Strong oxidizing agent in acidic, neutral, and basic media with different products
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Key Concepts
dTransition elements show multiple oxidation statesThe gradual decrease in atomicPrepared from chromite ore (FeCr₂O₄) throughPrepared from pyrolusite ore (MnO₂) through
Frequently Asked Questions
What topics are covered in The D And F Block Elements for CUET (UG)?
The D And F Block Elements is an important chapter in CUET (UG) Chemistry. It covers key concepts and formulas that are frequently tested in the exam. Key topics include: Position and Electronic Configuration of d-Block Elements, General Properties of Transition Elements, Important Compounds - Potassium Dichromate (K₂Cr₂O₇), Important Compounds - Potassium Permanganate (KMnO₄).
How important is The D And F Block Elements for CUET (UG)?
The D And F Block Elements is a frequently tested chapter in CUET (UG) Chemistry. Questions from this chapter appear regularly in previous year papers. There are 474 practice questions available for this chapter.
How to prepare The D And F Block Elements for CUET (UG)?
Start by understanding the core concepts, then solve practice questions. Focus on formulas and their applications. Use revision notes for quick review before the exam.
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