Bohr model

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What is the Bohr model?

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The Bohr model is a theory of atomic structure that depicts the atom as a small, positively charged nucleus surrounded by electrons that travel in circular orbits around the nucleus.

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Who proposed the Bohr model?

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The Bohr model was proposed by Danish physicist Niels Bohr in 1913.

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What is the significance of quantized energy levels in the Bohr model?

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In the Bohr model, electrons can only occupy certain allowed energy levels, which explains the discrete lines in atomic spectra.

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How does the Bohr model explain the emission spectrum of hydrogen?

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The Bohr model explains that when an electron transitions between energy levels, it emits or absorbs a photon with energy equal to the difference between those levels, resulting in the hydrogen emission spectrum.

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What is the formula for calculating the energy of an electron in the nth level of a hydrogen atom?

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E_n = -13.6 eV / n^2, where n is the principal quantum number.

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What is the principal quantum number (n)?

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The principal quantum number (n) indicates the main energy level occupied by an electron in an atom.

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What are the limitations of the Bohr model?

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The Bohr model does not accurately predict the spectra of multi-electron atoms and does not account for electron-electron interactions.

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What is the concept of electron orbitals?

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Electron orbitals are regions in an atom where there is a high probability of finding an electron, and they are described by quantum mechanics.

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How does the Bohr model relate to the modern quantum mechanical model of the atom?

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The Bohr model laid the groundwork for the quantum mechanical model, which describes electrons in terms of probabilities rather than fixed orbits.

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What is the relationship between wavelength and energy of a photon?

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The energy of a photon is inversely proportional to its wavelength, described by the equation E = hc/λ, where h is Planck's constant and c is the speed of light.