12/16/2023 0 Comments Orbital diagrams for all elementsThe next two electrons will go into the 3s orbital, and after that, the remaining four electrons will go into the 3p orbital.The next two electrons will go into the 2s orbital, after that, the next 6 electrons will go into the 2p orbital since the p subshell can hold up to 6 electrons.Now, for the electron configuration of Sulfur, the first 2 electrons will go in 1s orbital since s subshell can hold a maximum of 2 electrons.As per the Aufbau rule, the electrons will be filled into 1s orbital first then 2s, then 2p…so on.A Sulfur atom is a neutral atom that has an atomic number of 16 which implies it has a total of 16 electrons.Sulfur Electron configuration using the Aufbau Principle So, the order in which the orbitals are filled with electrons from lower energy to higher energy is – 1s < 2s < 2p < 3s < 3p < 4s < 3d < 4p < 5s < 4d < 5p < 6s < 4f < 5d < 6p < 7s < 5f < 6d < 7p and so on. Therefore, we have a diagonal rule for electron filling order in the different subshells using the Aufbau principle. So, all these are basics of How filling of electrons will be done in different subshells, obviously, you don’t have so much time for writing electron configuration by using so many rules. ⇒ For two different subshells having same (n + l) value, then the subshell with lower value of n has lower energy. ⇒ Lower the value of (n + l) for an subshell, the lower its energy, hence, it will be filled first with electrons. Generally, (n + l) rule is used to predict the energy level of subshells. Now, the electron configuration of an atom can be built by filling the electrons in a lower energy subshell first then higher, higher, and higher. So, in short, the s subshell can hold a maximum of 2 electrons(1 orbital), the p subshell can hold 6 electrons(3 orbitals), the d subshell can hold 10 electrons(5 orbitals), and the f subshell can hold at most 14 electrons(7 orbitals). These subshells can hold a maximum number of electrons on the basis of a formula, 2(2l + 1) where ‘l’ is the azimuthal quantum number. Simply understand that there are commonly four different types of subshells – s, p, d, and, f. For example, the 1s orbital will be filled first with electrons before the 2s orbital.In short, the electrons will be filled in the orbital in order of their increasing energies. It states that the orbital with the lowest energy level will be filled first before those with high energy levels.The Aufbau rule simply gives the order of electrons filling in the orbital of an atom in its ground state.The word ‘Aufbau’ in German means ‘building up’.
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