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Chemical Bonding

Telangana Board · Class 10 · Physical Sciences

Quick revision notes for Chemical Bonding — Telangana Board Class 10 Physical Sciences. Key concepts, formulas, and definitions for last-minute revision.

41 questions38 flashcards5 concepts

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Key Topics to Revise

1

1. Basic Idea of Chemical Bonding

  • There are over 118 known elements.
  • Atoms combine to form stable entities called molecules or compounds.
  • The force of attraction between any two atoms or a group of atoms that results a stable entity is called a chemical bond.
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2. Octet Rule and Noble Gases

  • Noble gases are chemically inactive and generally do not lose or gain electrons.
  • All noble gases except helium have eight electrons in the outermost shell.
  • Helium is stable with only 2 electrons because its first shell is complete.
3

3. Ionic Bond and Ionic Compounds

  • Ionic bond is formed between dissimilar atoms due to transfer of electrons.
  • Metal atoms usually lose electrons and form cations.
  • Non-metal atoms usually gain electrons and form anions.
4

4. Covalent Bond, Bond Order, and Common Molecules

  • Covalent bond is formed by mutual sharing of a pair of valence shell electrons.
  • Shared electrons belong to both atoms.
  • A single bond is one shared pair, a double bond is two shared pairs, and a triple bond is three shared pairs.

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Full Notes

Key Concepts

A chemical bond is the forceLewis dot structures show valence electronsAtoms tend to undergo chemical changesAn ionic bond is the electrostaticA covalent bond is formed by

Frequently Asked Questions

What are the important topics in Chemical Bonding for Telangana Board Class 10 Physical Sciences?
Chemical Bonding covers several key topics that are frequently asked in Telangana Board Class 10 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Chemical Bonding — Telangana Board Class 10 Physical Sciences?
Understand the core concepts first, then work through the 41 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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