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Bohr diagrams are useful models to show the count - and loosely, the arrangement - of electrons by shell.
The Bohr model
Neil Bohr discovered that each electron shell has specified energy levels and limited place for electrons.
The Bohr model helps us understand the way that quantum mechanics determines different energy levels for various atoms. However, the VSEPR (valence shell electron pair repulsion) model gives us a better understanding of how the outermost shell of electrons interact with each other (repelling each other maximally) to form bond angles.
the bohr model suggests that electrons follow orbits around the nucleus. Quantum mechanics describes electrons differently and gives them different properties. It tells us where an electron is most likely to be found but no defined path of motion around the nucleus
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The Bohr model of the atom places electrons in orbits or "shells." Elements in the first period only have electrons in the first shell. Elements in the second period have electrons in the first two shells. Elements in the third period have electrons in the first three shells, and so on.
Bohr diagrams are useful models to show the count - and loosely, the arrangement - of electrons by shell.
Neils Bohr
Now, an advanced model derived from the Niels Bohr theory.
Bohr diagrams are useful models to show the count - and loosely, the arrangement - of electrons by shell.
In Niels Bohr's model of the atom, how are electrons configured?
In Niels Bohr's model of the atom, how are electrons configured?
Two in the first shell and then eight on every other shell
The Bohr Model.
The bohr model of an atom shows the number of electrons, neutrons, and protons contained in the atom. Each electron is in an orbital (the lines), and the protons and neutrons are contained in the nucleus (the center thingy).
Electrons per shell in francium: 2, 8, 18, 32, 18, 8, 1.