2017年2月2日 · The quantum model does not have electron trajectories. Instead electrons are quite different, they are spread out a bit like clouds of gas, in areas called atomic orbitals. I would recommend reading about atomic orbitals, the Wikipedia page is quite interesting. You will see very quickly they are quite different from the Bohr model.

2014年5月21日 · In the Bohr Model, the electron is treated as a particle in fixed orbits around the nucleus. In the Quantum Mechanical Model, the electron is treated mathematically as a wave. The electron has properties of both particles and waves. The Bohr model was a one-dimensional model that used one quantum number to describe the distribution of electrons in the atom. The …

2017年6月6日 · Bohr's model assumes quantized orbits in which the electrons can move without the emission of radiant energy. The electron cloud model has a similar feature of quantized orbits. The Bohr's atomic model although assumes that the energy of the electron depends only on the principle quantum number (n) of the orbit. This assumption is flawed and was further …

2014年8月12日 · Bohr thought that electrons orbited the nucleus in circular paths; whereas in the modern view atomic electron structure is more like 3D standing waves. Bohr built upon Rutherford's model of the atom. In it most of the atom's mass is concentrated into the center (what we now call the nucleus ) and electrons surround the positive mass in something like a cloud. …

2015年11月15日 · With orbits (the Bohr Model) elections are at a fixed positions. With orbitals (the Quantum Mechanical Model), electrons change positions With the Bohr Model, electrons are at a fixed position. (starting from the bottom, closest to the nucleus, electrons could be at n = 1, 2, 3, etc.) As they get "excited", they move up. (Think of climbing up a ladder). When they relax, …

2015年6月21日 · In short the key difference is certainty of locating electrons in the atom. Bohr's model treats electron energy levels as clearly defined orbital paths around the nucleus ( ike planets orbit the Sun). The cloud model treats the energy levels as probability clouds, i.e. regions in which electrons are likely to be found. The shapes of the clouds are based on the shapes …

2016年2月21日 · The wave mechanical model goes further, a full quantum treatment, it had to wait for quantum mechanics to exist. The missing pieces were the development of the Pauli exclusion principal, wave-particle duality, due mostly to Louis de Broglie, that all particles exist in a blurry wave of probability and the equation that governs them is the ...

2015年8月2日 · There are a lot of similarities between the two models. Rutherford said that electrons revolve around the nucleus in rings. (from science.howstuffworks.com) Bohr also said it but in a slightly modified way. He said that the orbits could have only certain fixed sizes depending on their allowed energies. In an address to the Physical Society of Copenhagen, Bohr stated, …

2016年11月1日 · The Bohr model assumed that electrons orbit the atom like planets orbiting the sun The quantum mechanical view of the atom talks about wave functions and the probability of finding an electron at various places around the atom. With the quantum mechanical model, orbitals can be different shapes (eg, S - spherical, P - dumbbell). The Bohr model still serves …

2015年10月2日 · Bohr introduced energy quantization in his model in an ad hoc way by requiring the angular momentum to be an integer multiple of a fixed unit $\hbar = h/2\pi$ (which in turn resulted in energy also being quantized). So, Bohr model is not a classical mechanical model, since there is quantization of angular momentum and energy.