Atomic and Nuclear Physics — Syllabus
NEET-UG · Physics
Topics covered in Atomic and Nuclear Physics for NEET-UG Physics. Understand the syllabus structure and key areas to focus on.
Atomic and Nuclear Physics — Syllabus & Topics
Topics covered in Atomic and Nuclear Physics for NEET-UG Physics.
Topics in Atomic and Nuclear Physics
Early Atomic Models
- Thomson's plum pudding model proposed atoms as solid spheres with uniformly distributed positive charge and embedded electrons
- Alpha-scattering experiment by Geiger-Marsden revealed most alpha particles pass undeflected, few scatter at large angles
- Rutherford's nuclear model established that most atomic mass and all positive charge concentrate in a tiny nucleus
Bohr's Atomic Model and Hydrogen Spectrum
- Electrons revolve in circular orbits without radiating energy (first postulate)
- Angular momentum is quantized: L = nℏ where n = 1,2,3... (second postulate)
- Energy is emitted/absorbed only during transitions between orbits (third postulate)
Quantum Numbers and Electronic Configuration
- Principal quantum number (n): determines main energy level, n = 1,2,3...
- Orbital quantum number (l): determines subshell shape, l = 0,1,2...(n-1)
- Magnetic quantum number (mₗ): determines orbital orientation, mₗ = -l to +l
Nuclear Structure and Properties
- Nucleus contains protons and neutrons (nucleons) with Z protons and N neutrons
- Mass number A = Z + N, represents total nucleons
- Nuclear radius R = R₀A¹/³ where R₀ = 1.2 fm
Key Concepts
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What topics are covered in Atomic and Nuclear Physics for NEET-UG?
Atomic and Nuclear Physics is an important chapter in NEET-UG Physics. It covers key concepts and formulas that are frequently tested in the exam. Key topics include: Early Atomic Models, Bohr's Atomic Model and Hydrogen Spectrum, Quantum Numbers and Electronic Configuration, Nuclear Structure and Properties.
How important is Atomic and Nuclear Physics for NEET-UG?
Atomic and Nuclear Physics is a frequently tested chapter in NEET-UG Physics. Questions from this chapter appear regularly in previous year papers. There are 73 practice questions available for this chapter.
How to prepare Atomic and Nuclear Physics for NEET-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.