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The shell closest to the nucleus, 1n, can hold two electrons, while the next shell, 2n, can hold eight, and the third shell, 3n, can hold up to eighteen. The number of electrons in the outermost shell of a particular atom determines its reactivity, or tendency to form chemical bonds with other atoms.
Jul 20, 2023 · Two electrons fill the 1s orbital, and the third electron then fills the 2s orbital. Its electron configuration is 1 s 2 2 s 1 . Neon (Ne), on the other hand, has a total of ten electrons: two are in its innermost 1 s orbital and eight fill its second shell (two each in the 2 s and three p orbitals); thus, it is an inert gas and energetically ...
Feb 20, 2014 · The first shell can carry up to two electrons, the second shell can carry up to eight electrons. The third shell can carry up 18 electrons, but it is more stable by carrying only eight electrons. There is a formula for obtaining the maximum number of electrons for each shell which is given by $2n^2~\ldots$ where n is the position of a certain ...
- Shells and orbitals are not the same. In terms of quantum numbers, electrons in different shells will have different values of principal quantum nu...
- The pattern of maximum possible electrons = $2n^2$ is correct. Also, note that Brian's answer is good and takes a different approach. Have you lear...
Two of the lithium electrons can fit into the 1 s subshell, but the third electron must go into the second shell. The second shell has two subshells, s and p, which fill with electrons in that order. The 2 s subshell holds a maximum of 2 electrons, and the 2 p subshell holds a maximum of 6 electrons.
Dec 12, 2020 · Because the second shell has only two subshells, atoms with more electrons now must begin the third shell. The third shell has three subshells, labeled s, p, and d. The d subshell can hold a maximum of 10 electrons. The first two subshells of the third shell are filled in order—for example, the electron configuration of aluminum, with 13 ...
Transcript. The Aufbau principle states that electrons fill lower-energy atomic orbitals before filling higher-energy ones (Aufbau is German for "building-up"). By following this rule, we can predict the electron configurations for atoms or ions.
- 8 min
- Sal Khan
Feb 2, 2023 · The first shell can only contain two electrons, the second eight and the third eighteen. Electrons in the same shell have the same amount of energy. The general rule stating the number of electrons present in a shell is 2n 2, where ‘n’ stands for the number of shells; for example, K-shell = 1, L-shell = 2.
