physics·NCERT Class 12·Atoms
Bohr Atom & Spectra
Hard+90 XP⚛️
Why does hydrogen emit only specific colors of light? Excite an electron to n=3 and watch the photon flash as it drops back. Each spectral line is a quantum story.
›Energy levels: Eₙ = −13.6/n² eV (negative = bound state).
›Photon energy: hν = E_higher − E_lower (Rydberg formula).