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The Bohr model demonstrates electron placement by showing electrons orbiting the nucleus in specific energy levels, or "shells". Each shell can only accommodate a certain number of electrons, with the electrons closest to the nucleus having lower energy levels. The model helps us understand how electrons are organized and distributed within an atom.
The basic assumptions of the Bohr model of the atom are that electrons orbit the nucleus in fixed, quantized energy levels without emitting radiation, electrons can only exist in these specific energy levels, and that energy is absorbed or emitted when an electron jumps from one energy level to another.
energy levels
Electrons move in definite regions called electron clouds or energy levels. Electron clouds do in fact contain energy levels, it is a common misconception. It is just that there are many levels each holding 2 electrons which are very many close in energy. the cloud idea was a very early model of metals, bands wre recognised nearly 100 years ago.
Each electron in an atom is in an orbital (*NOT* an orbit!!) at a specific energy level from the positive nucleus. The energy levels of these orbitals are fixed -- an electron can go from orbital 's' to orbital 'p', but it can't go halfway between these two orbitals. When an electron in an atom goes from a higher orbital to a lower one, then the atom must give off an amount of energy, that is exactly the difference in energy in the two levels. For a hydrogen atom, these orbital levels are fixed by the fact that the angular momentum of an electron in an orbital is quantized -- ie, it comes in exact multiples, but not fractions, of a minimal amount.
They have fixed energy values.
Any electron is not fixed to any sub-shell or orbital. If you provide sufficient energy to an electron, it would make transition to any of the higher energy orbitals and then come back to the lower orbitals radiating energy.
An electron may move to an electron shell farther out from the nucleus.
Each electron in an atom is in an orbital (*NOT* an orbit!!) at a specific energy level from the positive nucleus. The energy levels of these orbitals are fixed -- an electron can go from orbital 's' to orbital 'p', but it can't go halfway between these two orbitals. When an electron in an atom goes from a higher orbital to a lower one, then the atom must give off an amount of energy, that is exactly the difference in energy in the two levels. For a hydrogen atom, these orbital levels are fixed by the fact that the angular momentum of an electron in an orbital is quantized -- ie, it comes in exact multiples, but not fractions, of a minimal amount.
Each electron in an atom is in an orbital (*NOT* an orbit!!) at a specific energy level from the positive nucleus. The energy levels of these orbitals are fixed -- an electron can go from orbital 's' to orbital 'p', but it can't go halfway between these two orbitals. When an electron in an atom goes from a higher orbital to a lower one, then the atom must give off an amount of energy, that is exactly the difference in energy in the two levels. For a hydrogen atom, these orbital levels are fixed by the fact that the angular momentum of an electron in an orbital is quantized -- ie, it comes in exact multiples, but not fractions, of a minimal amount.
energy
Niels Bohr first suggested that electrons orbited the nucleus in fixed energy levels.
The Bohr model demonstrates electron placement by showing electrons orbiting the nucleus in specific energy levels, or "shells". Each shell can only accommodate a certain number of electrons, with the electrons closest to the nucleus having lower energy levels. The model helps us understand how electrons are organized and distributed within an atom.
The basic assumptions of the Bohr model of the atom are that electrons orbit the nucleus in fixed, quantized energy levels without emitting radiation, electrons can only exist in these specific energy levels, and that energy is absorbed or emitted when an electron jumps from one energy level to another.
energy levels
Electrons move in definite regions called electron clouds or energy levels. Electron clouds do in fact contain energy levels, it is a common misconception. It is just that there are many levels each holding 2 electrons which are very many close in energy. the cloud idea was a very early model of metals, bands wre recognised nearly 100 years ago.
Electrons moved in fixed orbits around the nucleus in Bohr's model of the atom. These orbits were quantized, meaning they had specific energy levels, and electrons could jump between these orbits by either absorbing or emitting energy.