The maximum number of electrons in an atom can be calculated by using the formula 2n^2, where n represents the energy level or shell of the atom. For example, if the atom has an energy level of n=2, then the maximum number of electrons would be 2(2)^2 = 8 electrons.
The maximum number of electrons in a subshell can be calculated by using the formula 4l+2, where l represents the angular momentum quantum number of the subshell. For example, if the subshell has an angular momentum quantum number of l=1, then the maximum number of electrons would be 4(1)+2 = 6 electrons.
The maximum number of electrons that can be in the same energy level is equal to the period number of the element. For example, the fourth energy level can hold a maximum of 4 subshells and thus can hold a maximum of 32 electrons.
The maximum number of electrons in an ion can be calculated by subtracting the charge of the ion from the atomic number of the element. For example, a +2 ion of carbon (atomic number 6) would have a maximum of 6-2 = 4 electrons.
No, the maximum number of electrons in an atom can never exceed 8. This is because the maximum number of electrons in the outermost energy level (valence level) is 8, and elements tend to gain, lose, or share electrons to achieve a stable octet configuration.