2015年10月30日 · Because hydrogen and hydrogen-like atoms only have one electron and thus do not experience electron correlation effects. Hydrogen-like atoms include H, He^(+), Li^(2+), Be^(3+), etc. The Bohr model of the atom claims that: The electron(s) orbit the nucleus Electrons don't electromagnetically radiate and thus stay in an orbit of constant radius and definite energy levels Energy levels are ...

2014年8月16日 · The main problem with Bohr's model is that it works very well for atoms with only one electron, like H or He+, but not at all for multi-electron atoms. Bohr was able to predict the difference in energy between each energy level, allowing us to predict the energies of each line in the emission spectrum of hydrogen, and understand why electron energies are quantized. Bohr's model breaks down ...

2016年4月4日 · It is due mainly to the allowed orbits of the electrons and the "jumps" of the electron between them: Bohr tells us that the electrons in the Hydrogen atom can only occupy discrete orbits around the nucleus (not at any distance from it but at certain specific, quantized, positions or radial distances each one corresponding to an energetic state of your H atom) where they do not radiate energy ...

2015年12月2日 · Bohr model is valid only for hydrogen since it has one electron only, however, when it was applied to other elements, the experimental data were different than the theoretical calculations. Bohr model could me applied however, to Hydrogen-like ions where they have to loose all their electrons except one. For example: Ca^(19+), Li^(2+), Be^(3 ...

2017年6月19日 · "1313 kJ mol"^(-1) !! VERY LONG ANSWER !! Start by calculating the wavelength of the emission line that corresponds to an electron that undergoes a n=1 -> n = oo transition in a hydrogen atom. This transition is part of the Lyman series and takes place in the ultraviolet part of the electromagnetic spectrum. Your tool of choice here will be the Rydberg equation for the hydrogen atom, which ...

The model of the atom made by Neil Bohr depicts a positively charged nucleus surrounded by a negatively charged ring of electrons that travel in circular orbits. It was a large advancement in the field because Bohr's model described, for the first time, that an electron must absorb or omit energy to move between orbits.

2018年1月13日 · Well, Bohr's model of the atom assumes fixed orbits AND trajectories for the electron. Simultaneously known orbits and trajectories violate the Heisenberg Uncertainty Principle. Bohr's model of the nitrogen atom is: The problem is, electrons do NOT travel in fixed orbits, and they do NOT travel with fixed trajectories. That is, they should NOT have simultaneously well-known positions x and ...

2015年12月6日 · In Bohr model , the angular momentum is quantised. mvr = nh/2 pi It means that electron will revolve around nucleus only in that orbit whose angular momentum will satisfy that equation. Chemistry Science

2014年8月3日 · Quantum mechanics predicted the Bohr atomic model by showing the orbitals of electrons and how they emit energy on jumping from their excited state to another. By Rutherford's satement that Electrons revolved around the atom, it was shown by angular momentum that they revolve around the nucleus in a specific orbit, according to Max Planck. But there were some exceptions. Bohr model was only ...

2015年11月3日 · This is not a good question as it is not compatible with the Bohr model of the atom. An electron in a circular orbit like this would emit radiation and, by losing energy, spiral into the nucleus. To overcome this problem Bohr proposed the concept of "energy levels". I have given an answer based on classical physics.