In a model of an atom where there are a total of 8 electrons, the distribution of electrons across different energy levels (or shells) typically follows the rules established by the Aufbau principle and the maximum capacity of each shell.
The maximum number of electrons in each energy level (shell) is given by the formula \(2n^2\), where \(n\) is the principal quantum number representing the shell level.
- 1st energy level (n=1): can hold a maximum of \(2(1^2) = 2\) electrons.
- 2nd energy level (n=2): can hold a maximum of \(2(2^2) = 8\) electrons.
- 3rd energy level (n=3): can hold a maximum of \(2(3^2) = 18\) electrons.
For an atom with 8 electrons, the distribution would typically be:
- 1st energy level (n=1): 2 electrons
- 2nd energy level (n=2): 6 electrons
Thus, the configuration would be 2 electrons in the first energy level and 6 electrons in the second energy level.
In summary:
- 1st energy level: 2 electrons
- 2nd energy level: 6 electrons
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