Atoms or molecules emit or absorb energy only in discrete quantities called (or photons for light). The energy ( ) of a quantum is directly proportional to its frequency:
It is impossible to determine both the exact position and momentum of an electron simultaneously. 4. Quantum Mechanical Model Atoms or molecules emit or absorb energy only
Discovered by E. Goldstein using a perforated cathode. Unlike cathode rays, the Atoms or molecules emit or absorb energy only
[Thomson's Model] ──> [Rutherford's Model] ──> [Bohr's Model] ──> [Quantum Mechanical Model] (Plum Pudding) (Nuclear Model) (Quantized Orbits) (Electron Cloud/Orbital) Thomson’s Plum Pudding Model Atoms or molecules emit or absorb energy only
The chapter transitions from historical discoveries to modern electronic behavior: Discovery of Subatomic Particles
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