Bohr's model replaced Rutherford's model primarily because it addressed the shortcomings of the latter, particularly regarding atomic stability and electron behavior. While Rutherford's model suggested that electrons orbit the nucleus like planets around the sun, it could not explain why atoms emit or absorb energy at specific wavelengths. Bohr introduced quantized energy levels for electrons, which provided a framework for understanding atomic spectra and the stability of atoms. This model aligned better with experimental observations and laid the groundwork for modern quantum mechanics.
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