Atomic Structure — Formula Sheet
Telangana Open School (TOSS) · Class 12 · Chemistry
10 formulas from Atomic Structure (Telangana Open School (TOSS) Class 12 Chemistry) on one page, grouped by topic.
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Formulas and Key Relations
Electromagnetic Radiation
c = νλ
E = hν
E = hc/λ
Hydrogen Spectrum & Bohr Model
ν̄ = R_H (1/n₁² - 1/n₂²)
E_n = -13.6/n² eV
mvr = nh/2π
Electromagnetic Radiation and Spectra
Key parameters
wavelength (λ), frequency (ν), wave number (ν̄), amplitude, and velocity (c = νλ).
Bohr's Model of the Atom
Electrons can jump between orbits by absorbing or emitting photons of energy ΔE = hν.
Angular momentum is quantized
mvr = nh/(2π), where n is the principal quantum number.
Proton
positive charge, mass ≈ 1840 × mass of electron
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