Structure of Atom
Kerala Board · Class 10 · Science
Quick revision notes for Structure of Atom — Kerala Board Class 10 Science. Key concepts, formulas, and definitions for last-minute revision.
Key Topics to Revise
Spectrum and Wave Nature of Light
- Rainbow shows continuous spectrum with seven colors: VIBGYOR (Violet, Indigo, Blue, Green, Yellow, Orange, Red)
- Light is an electromagnetic wave with speed c = 3 × 10⁸ m/s
- Electromagnetic waves are produced when electric charges vibrate
Bohr's Model and Its Limitations
- Electrons occupy stationary orbits with fixed energy at different distances from nucleus
- Electrons absorb energy to jump from lower to higher energy level (excited state)
- Electrons emit energy when jumping from higher to lower energy level
Quantum Mechanical Model
- Electrons don't follow definite paths around nucleus
- Cannot measure position and velocity of electron simultaneously
- Electrons exist in regions of space called orbitals
Quantum Numbers
- Four quantum numbers: n, l, mₗ, mₛ
- Principal quantum number (n): size and energy of main shell, values 1,2,3...
- Angular momentum quantum number (l): shape of subshell, values 0 to n-1
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What are the important topics in Structure of Atom for Kerala Board Class 10 Science?
Structure of Atom 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.
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Start by understanding all key concepts. Practise previous year questions from this chapter. Revise formulas and definitions regularly. Use flashcards for quick revision before the exam.
Sources & Official References
- Kerala Board of Public Examinations — keralapareekshabhavan.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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Classification of Elements- The Periodic Table
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