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Chapter Summary

Elements of Group 13, 14 and 15

Maharashtra Board · Class 11 · Chemistry

Summary of Elements of Group 13, 14 and 15 for Maharashtra Board Class 11 Chemistry. Key concepts, important points, and chapter overview.

45 questions20 flashcards5 concepts

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Overview

The p-block elements of groups 13, 14, and 15 represent the boron family, carbon family, and nitrogen family respectively. These elements show diverse properties ranging from non-metals to metals as we move down each group. Their outer electronic configurations ns²np¹, ns²np², and ns²np³ respectivel

Key Concepts

Group 13 elements have ns²np¹

Group 13 elements have ns²np¹, group 14 have ns²np², and group 15 have ns²np³ configuration. Atomic radius increases down the group, but Ga has smalle

Group oxidation states are +3

Group oxidation states are +3, +4, and +5 for groups 13, 14, and 15 respectively. Lower oxidation states (+1 for group 13, +2 for group 14, +3 for gro

Reaction with oxygen

Reaction with oxygen: Group 13 forms E₂O₃, group 14 forms EO and EO₂, group 15 forms E₂O₃ and E₂O₅. Oxide nature changes from acidic to basic down eac

Catenation is self

Catenation is self-linking of atoms by covalent bonds. Carbon shows maximum catenation (C-C bond: 348 kJ/mol) followed by Si > Ge = Sn. Carbon allotro

BCl₃ has trigonal planar structure

BCl₃ has trigonal planar structure with incomplete octet. AlCl₃ exists as dimer Al₂Cl₆. B₂H₆ has unique 3-center-2-electron bonds (banana bonds). SiO₂

Learning Objectives

  • Understand the electronic configurations and trends in atomic properties of group 13, 14, and 15 elements
  • Learn the oxidation states exhibited by these elements and the concept of inert pair effect
  • Study the chemical properties including reactions with air, water, and halogens
  • Explore the phenomenon of catenation and allotropy with focus on carbon and phosphorus
  • Analyze molecular structures of important compounds using VSEOT and hybridization

Frequently Asked Questions

What are the important topics in Elements of Group 13, 14 and 15 for Maharashtra Board Class 11 Chemistry?
Elements of Group 13, 14 and 15 covers several key topics that are frequently asked in Maharashtra Board Class 11 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Elements of Group 13, 14 and 15 — Maharashtra Board Class 11 Chemistry?
Understand the core concepts first, then work through the 45 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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