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Periodic Table And Electron Configuration

Kerala Board · Class 10 · Chemistry

Complete topic list for Periodic Table And Electron Configuration in Kerala Board Class 10 Chemistry. Key concepts, sub-topics, and what to focus on for board exams.

44 questions22 flashcards5 concepts

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4 Topics · Kerala Board Class 10 Chemistry

Topics in Periodic Table And Electron Configuration

1

Quantum Numbers and Atomic Structure

  • Bohr model limitations led to quantum mechanical model of atom
  • Orbitals are regions of maximum probability of finding electrons
  • Four quantum numbers describe electron characteristics: n, l, m, s
2

Subshell Electron Configuration

  • Electrons fill subshells in order of increasing energy: 1s < 2s < 2p < 3s < 3p < 4s < 3d...
  • Aufbau principle: electrons occupy lowest energy orbitals first
  • Pauli exclusion principle: maximum 2 electrons per orbital with opposite spins
3

Periodic Table Blocks and Trends

  • s-block: Groups 1-2, outermost electrons in s subshell (ns¹⁻²)
  • p-block: Groups 13-18, outermost electrons in p subshell (ns² np¹⁻⁶)
  • d-block: Groups 3-12, electrons filling in d subshell ((n-1)d¹⁻¹⁰ ns¹⁻²)
4

Ionization Enthalpy and Periodic Trends

  • Ionization enthalpy = energy needed to remove outermost electron from gaseous atom
  • Decreases down a group due to increased atomic size and shielding effect
  • Increases across a period due to increased nuclear charge

Key Concepts

Based on waveFour quantum numbers describe electron characteristicsOrbitals are regions of maximum electronElectrons fill orbitals in orders

Frequently Asked Questions

What are the important topics in Periodic Table And Electron Configuration for Kerala Board Class 10 Chemistry?
Periodic Table And Electron Configuration covers several key topics that are frequently asked in Kerala 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 Periodic Table And Electron Configuration — Kerala Board Class 10 Chemistry?
Understand the core concepts first, then work through the 44 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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