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Atom, Origin of Spectra: Bohr's Theory of Hydrogen Atom — Formula Sheet

ICSE · Class 12 · Physics

7 formulas from Atom, Origin of Spectra: Bohr's Theory of Hydrogen Atom (ICSE Class 12 Physics) on one page, grouped by topic.

59 questions35 flashcards7 formulas & key relations5 concepts

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7 Entries · 3 Sections

Formulas and Key Relations

2. Alpha-Particle Scattering and Nuclear Size

N/t = constant, i.e. N1/N2 = t1/t2

N ∝ 1/sin^4(θ/2)

r0 = (1/4πε0)(2Ze^2/K)

b = Ze^2 cot(θ/2) / [4πε0(1/2 mv^2)] ⇒ b ∝ cot(θ/2)

4. Atomic Number, Mass Number, and Isotopes

N = A - Z

Z X A

Key relations

For hydrogen-like atoms, the radius of the nth orbit is rn = 0.53 n^2 / Z Å.

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Frequently Asked Questions

What are the important topics in Atom, Origin of Spectra: Bohr's Theory of Hydrogen Atom for ICSE Class 12 Physics?
Key topics in Atom, Origin of Spectra: Bohr's Theory of Hydrogen Atom include Alpha-Particle Scattering and Rutherford's Nuclear Model, Bohr's Atomic Model and Postulates, Radii, Speed and Energy of Bohr Orbits, Discrete Energy Levels, Excitation and Ionisation. Study these first, then practise questions on each for the ICSE Class 12 board exam.
How many formulas are in Atom, Origin of Spectra: Bohr's Theory of Hydrogen Atom?
This sheet lists 7 formulas from Atom, Origin of Spectra: Bohr's Theory of Hydrogen Atom, grouped by topic. Learn what each symbol stands for so you can apply the formula, not just recall it.
How should I revise Atom, Origin of Spectra: Bohr's Theory of Hydrogen Atom for the ICSE Class 12 board exam?
Learn the core ideas first, then work through the 59 practice questions on Atom, Origin of Spectra: Bohr's Theory of Hydrogen Atom. Revise definitions regularly and use flashcards for quick recall before the exam.

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