Electron configuration of aluminum. Three oxidation states of aluminium are +3, +1 and+2.

An atom in its lowest energy state is said to be in its ground state. As you know, electron configurations are written in accordance with the Aufbau Principle. 6. Video: Cr, Cr2+, and Cr3+ Electron Configuration Notation. Electronic configuration of the Aluminum atom: 1s 2 2s 2 2p 6 3s 2 3p 1Reduced electronic configuration Al: [Ne] 3s 2 3p 1. Feb 15, 2017 · An example of the electron configuration of aluminum in an excited state is "1s"^2 "2s"^2 "2p"^6 "3s"^1 "3p"^2. 4. Cr: [Ar]3 d5 4 s1. The Madelung rule gives the order: 1s < 2s < 2p < 3s < 3p < 4s < 3d < 4p < 5s < 4d < 5p < 6s < 4f < 5d < 6p < 7s < 5f < 6d < 7p. 3 or Figure 3. May 10, 2021 · Basic Aluminum Facts. Aluminum, gallium, indium, and thallium are metallic. 1. Jun 14, 2015 · But, the orbitals overlap. In atomic physics and quantum chemistry, the electron configuration is the distribution of electrons of an atom or molecule (or other physical structure) in atomic or molecular orbitals. Oganesson (element 118) is a good example to show the order of the orbitals. Dec 3, 2019 · Electronic configuration. Question. For example, to find the configuration for the lithium ion (Li⁺), start with neutral lithium (1s²2s¹). In writing the electron configuration for Chromium the first two electrons will go in the 1s orbital. 6 5. And for Al 3+ it can be represented as 1s22s22p6. Al (Aluminum) is an element with position number 13 in the periodic table. A shorthand way to write the electron configuration, called noble gas notation, is [Ne]323p1. In writing the electron configuration for Iron the first two electrons will go in the 1s orbital. The electron configuration of Li is. 4. So it would have three dots around the symbol for aluminum, two of them paired to represent the 3s electrons: \[\dot{Al:} \nonumber \nonumber \] The valence electron configuration for selenium is 4s 2 4p 4. Below is the electronic diagram of the Aluminum atom Distribution of Jun 27, 2022 · The valence electron configuration for aluminum is 3s 2 3p 1. Accordingly, the combined first three ionization energies of aluminium are far lower than the fourth ionization energy alone. For each atom the subshells are given first in concise form, then with all subshells written out, followed by the number of electrons per shell. The first two subshells of the third shell are filled in order—for example, the electron configuration of aluminum, with 13 electrons, is 1s 2 2s 2 2p 6 3s 2 3p 1. 3 2. For the transition metals, electrons are removed from the s orbital first and then from the d orbital. 3p1 and the term symbol is 2P1/2. The electron configuration of boron is: B: 1s 2 2s 2 2p 1. He: 1s2 He: 1 s 2. Jun 30, 2023 · Properties and Periodic Trends. They are shown in green in Figure 5. This is assuming the aluminum atom is a neutral atom in a grounded state. There are 2 steps to solve this one. Aug 28, 2023 · Solution. Valency and valence electrons of aluminum (Al) The ground state electron configuration of aluminum is 1s 2 2s 2 2p 6 3s 1 3p x1 3p y1. Since 1s can only hold two electrons the next 2 electrons for Copper go in the 2s orbital. The Orbital Diagram of Aluminium also given here. The three electrons for Li are arranged in the 1s subshell (two electrons) and the 2s subshell (one electron). Q1. The ground state electron configuration of ground state gaseous neutral aluminium is [ Ne ]. Similar Questions. What is the Bohr diagram? The Bohr diagram, also known as the Bohr model or the planetary model, is a simplified representation of an atom’s electron configuration. Elements are shown from atomic number 1 (hydrogen) up to 94 (plutonium). Feb 19, 2022 · Figure 9. Jan 4, 2016 · This tells you that a neutral aluminium atom contains #13# protons inside its nucleus and #13# electrons surrounding its nucleus. The next atom is the alkali metal lithium with an atomic number of 3. The atomic number of an element is equal to the number of protons and electrons in that element. Condensed Electron Configuration of Aluminum Apr 18, 2016 · Given the periodic table: We see aluminum is atomic number 13. When forming ions, elements typically gain or lose the minimum number of electrons necessary to achieve a full octet. Three oxidation states of aluminium are +3, +1 and+2. (Al) Aluminium is a chemical element of the periodic table with chemical symbol Al and atomic number 13 with an atomic weight of 26. Question: Concerning the electron configuration of aluminum, 1s22s22p3s23p! which of the following represents the valence electrons only? Multiple Choice Ο Ο Ο Ο Ο Ο 22,22ρθα, 2. Get the free "Electron Configuration Calculator" widget for your website, blog, Wordpress, Blogger, or iGoogle. This includes the 2 electrons in the 2s sublevel and the 6 electrons in the 2p sublevel. Aug 14, 2020 · Figure 8. so there are only 3 valance electrons. The electron configurations of elements with higher atomic number can be written by following the orbital-filling chart in Figure 5. This page shows the electron configurations of the neutral gaseous atoms in their ground states. Answer link. Hope this helps! Electron configuration: [Ne]3s23p1 Oxidation state: 3 Crystal structure: cubic face centered. Place eight dots in groups of two on the outside of the second circle and To write condensed electron configurations (also called abbreviated electron configurations) for Aluminum (Al) we first write the full electron configuration Aug 4, 2016 · Aluminium is located in period 3, group 13, and has an atomic number equal to #13#. A shorthand way of writing this is to use the preceding noble gas configuration by putting its symbol in square brackets in front of the valence electrons. 2. To find the electron configuration for an ion, first identify the configuration for the neutral atom. 9. Atomic excitations follow the following selection rules: The change in total angular momentum, ΔL, must be ±1, where L = ∣∣ ∣ ∣∑ kml,k∣∣ ∣ ∣, k indicates the k th electron, and ml is the magnetic quantum number of the orbital. The p orbital can hold up to six electrons. 9815 and whose Electron configuration is [Ne] 3s2 3p1. The first electron has the same four quantum numbers as the hydrogen atom electron ( n = 1, l = 0, ml = 0, ms = +1 2 m s = + 1 2 ). 9815 u and is classed as post-transition metal and is part of group 13 (boron group). 4 3. Mar 26, 2020 · Inner transition elements are metallic elements in which the last electron added occupies an f orbital. Special Cases. 3 or 2. Electron configuration [Ne] 3s 2 Jul 27, 2021 · Write the noble gas configuration by writing the noble gas core, followed by the valence electrons. For main group elements, the last orbital gains or loses the electron. Electron configurations describe where electrons are located around the nucleus of an atom. Electron configurations of ions. Aluminium has 13 electrons and 14 neutrons. (b) Covalent radii of the elements are shown to scale. Aluminium atoms have 13 electrons and the shell structure is 2. [He] [Ne] [Ar] [kr] [Xe] [Rn] 1 2 3 4 5 6 S Р d f 0 U i ų U ų i 0⁹⁰ Aug 14, 2020 · The electron configuration and the orbital diagram are: Following hydrogen is the noble gas helium, which has an atomic number of 2. The charge of an aluminum ion is typically 3+. This is because the element’s atomic number is 13, reflecting the fact that it has 13 electrons and 13 protons. The electron configuration of the neutral atom looks like this #"Al: " 1s^2 2s^2 2p^6 3s^2 3p^1# Jan 15, 2024 · The first two subshells of the third shell are filled in order—for example, the electron configuration of aluminum, with 13 electrons, is 1s 2 2s 2 2p 6 3s 2 3p 1. Figure 8. That is, the orbital notation of aluminum is 1s 2 2s 2 2p 6 3s 2 3p 1. Question: Write the condensed (noble-gas) electron configuration of aluminum. 4, we would expect to find the electron in the 1 s orbital. 1 9. Then, since the lithium ion has one less Aluminum (Al) - Relative atomic mass (A) of aluminum is 27. 4 2. The available empty Question: Part A What is the electron configuration of aluminum? View Available Hint (s) 1s 22s22p 63s 23p 34s 24p1 O 1s22s22p 63s 23p1 O1s22s22p1 O 1s22s22p 3s 23p3 Submit. The helium atom contains two protons and two electrons. When we write our electron configurations, we utilize the valence orbitals relative to each period to construct it, and write a superscript for the maximum number of electrons in each orbital for each given period. The electron configuration of the aluminum shows that it has three unpaired electrons in the last shell (3s 1 3p x1 3p y1 ). The electron configuration for Aluminum is 1s 2 2s 2 2p 6 3s 2 3p 1 . Next, remove electrons from the highest energy orbital. Jan 26, 2021 · Al 3+ means there are 3 electron removals and in the electron configuration, there will be a removal of electrons from the last orbits. Aluminum is a soft, silvery-white, ductile metal in the boron group. First, write the electron configuration for the neutral atoms: Zn: [Ar]3 d10 4 s2. Mar 23, 2023 · March 23, 2023 Jay. They each have three electrons in their outermost shell (a full s orbital and one electron in the p orbital) with the valence electron configuration ns 2 np 1. Aluminium. Jun 9, 2024 · Aluminum is the 13th element of the periodic table so its atomic number is 13. Locate the noble gas element in the period above the element of interest. Name: Aluminum Atomic Number: 13 Element Symbol: Al Group: 13 Period: 3 Block: p Element Family: Basic Metal Atomic Mass: 26. So Oxygen's electron configuration would be O 1s 2 2s 2 2p 4. Put the noble gas in brackets and write the remainder of the electron configuration. The Shorthand electron configuration (or Noble gas configuration) as well as Full electron configuration is also mentioned in the table. While ancient civilizations used aluminum salts for dyeing mordants and astringents, it wasn’t until 1825 that H. The ground state electron configuration of an atom places its electrons in the lowest energy levels possible Its electron configuration is. However, a curious thing happens after the 3 p subshell is filled: the 4 s subshell begins to fill before the 3 d subshell does. For aluminum, which has an atomic number of 13, the electron configuration can be written in a condensed form using the previous noble gas, neon (Ne), to represent the inner electrons. [17] This electron configuration gives aluminum its unique chemical and physical properties, allowing it to form compounds and participate in various reactions. Atomic no. only the two dots in the interval between the first and the second circles. Here we have covered the Aluminium Electron Configuration with the symbol of Aluminium. Otherwise, write the order of the energy levels with electron configuration chart: 1 s 2 2 s 2 2 p 3 \rm 1s^22s^22p^3 1 s 2 2 s 2 2 p 3. Aluminium has atomic number 13 so the full electron configuration will be: 13Al 1s22s22p63s23p1. There are an infinite number of possible excited states for the valence electrons of aluminum, depending on how much energy the electrons have absorbed. The atomic radius for the halogens increases down the group as n increases. The Kossel shell structure of aluminium. Since 1s can only hold two electrons the next 2 electrons for Chromium go in the 2s orbital. 1 8. 1. Therefore, the valency of aluminum is 3. Therefore, a hydrogen atom contains 1 electron, which will be placed in the s subshell of the first shell/orbit. 981 5385(7) Electron Configuration: [Ne]3s 2 3p 1 (shorthand) or 1s 2 2s 2 2p 6 3s 2 3p 1 (full) Jun 29, 2019 · The first two subshells of the third shell are filled in order—for example, the electron configuration of aluminum, with 13 electrons, is 1s 2 2s 2 2p 6 3s 2 3p 1. This tendency is called the octet rule, because each bonded atom has 8 valence electrons including shared electrons. Therefore, the n = 2 shell of a magnesium atom contains 8 electrons. Therefore, an aluminum atom has thirteen protons and thirteen electrons. Its definition establishes that it is a metallic chemical element, symbol Al, atomic number 13, weight or atomic mass of 26. Was this answer helpful? Definition of aluminum. In its ground state, a neutral aluminum atom will have the following electron configuration: 1s22s22p63s23p1. Similarly, a transition metal tends to react to form a d 10 s 2 p 6 electron configuration. A neutral atom of aluminum has 13 protons and 13 electrons. Continue the electron configuration from the noble gas until you reach the element of interest. By convention, the ms = +12 m s = + 1 2 value is usually filled first. Sodium cation loses one electron, so Na +: 1 s2 2 s2 2 p6 3 s1 Jun 24, 2021 · Such overlaps continue to occur frequently as we move up the chart. The electron configuration and the orbital diagram are: Following hydrogen is the noble gas helium, which has an atomic number of 2. There are two inner transition series: Electron Configuration Calculator. 3 3. Its full electron configuration is #color(blue)("1s"^2"2s"^2"2p"^6)"3s"^2"3p"^1"#. Configurations of ions present a special case of electron configuration and also demonstrate the reason for the formation of those ions in the first place. Here is a video that explains further Hope this helps! Remember electrons are negatively charged, so ions with a positive charge have lost an electron. g. The electron configuration of an atom describes the distribution of electrons in the atom's atomic orbitals. We can use this method to predict the charges of ions in ionic compounds. Li: 1s22s1 Li: 1 s 2 2 s 1. For example, fluorine has seven valence electrons, so it is most likely to gain one electron to form an ion with a 1- charge. Thus, electronic configuration of aluminium is K L M 2 8 3. The nex six electrons will go in the 2p orbital. # 13 -10 = 3 #. Located in the III period. Oct 3, 2016 · Watch on. Was this answer helpful? Al: properties of free atoms. Jun 27, 2024 · Let us return to the electron configuration of nitrogen and write it again: Find the atomic number of nitrogen (7) and use this electron configuration calculator to get a complete electron configuration. The atomic number gives us the number of protons in an atom of aluminum. This tells you that the electron configuration of a neutral aluminium atom must account for a total of #13# electrons. We'll put six in the 2p orbital and then put the . For example, the electron configuration of lithium, 1s²2s¹, tells us that lithium has two electrons in the 1s subshell and one electron in the 2s subshell. Melting point: 660. to draw the electron configuration Put Al in the middle of a circle. From the Periodic The electron configurations of silicon (14 electrons), phosphorus (15 electrons), sulfur (16 electrons), chlorine (17 electrons), and argon (18 electrons) are analogous in the electron configurations of their outer shells to their corresponding family members carbon, nitrogen, oxygen, fluorine, and neon, respectively, except that the principal quantum number of the outer shell of the heavier Dec 21, 2020 · The orbital configuration of the Aluminum is 1s²2s²2p⁶3s²3p¹. Place two dots next to the circle and draw a second circle leaving. [1] For example, the electron configuration of the neon atom is 1s2 2s2 2p6, meaning that the 1s, 2s, and 2p subshells are occupied by Jun 3, 2017 · The normal electron configuration of aluminum is [N e]3s23p1. Was this answer helpful? 6. Jul 18, 2022 · Referring to either Figure 2. Using Figure 2. Schematic electronic configuration of aluminium. For phosphorus (element 15) as an example, the concise form is [Ne] 3s 2 3p 3. The number of neutrons in an atom can be determined by the difference between the atomic mass and The electron configuration for aluminum is 1s2, 2s2, 2p6, 3s2, 3p1. In the electron configuration, the number of electrons should be written as a superscript of electron atomic Our expert help has broken down your problem into an easy-to-learn solution you can count on. Hope this helps! Answer link. By convention, the ms = +1 2 m s = + 1 2 value is usually filled first. Jul 12, 2019 · Electron Configuration of Aluminum. You then split the electrons between the different orbitals. The proton number is also 13. This leaves only three electrons in the third shell # 3s^2 3p^1#. Its Write the electron configurations of these cations. Aluminium is solid at room temperature. These elements are found in Group 13 (XIII) of the p block in the Periodic Table of Elements. To find the electron configuration of an atom, you first need to know the number of electrons that it has. The part of the electron configuration that is blue is the electron configuration of neon, the noble gas in the previous period. The electron configuration of Aluminum is 1s22s22p63s23p1. Ørsted isolated aluminum. Let's find the ground state electron configuration of Aluminum! A single Aluminum atom has 13 protons and 13 electrons, but how do we know where Aluminum put Jul 28, 2023 · The first two subshells of the third shell are filled in order—for example, the electron configuration of aluminum, with 13 electrons, is 1s 2 2s 2 2p 6 3s 2 3p 1. Locate the atom on the periodic table. Nov 5, 2019 · If there are more protons than electrons, an atomic ion has a positive charge and is called a cation. 1: Generalized energy-level diagram for atomic orbitals in an atom with two or more electrons (not to scale). 12. You can thus say that the electron configuration for aluminium must account for a total of #13# electrons. A shorthand way to write the electron configuration, called noble gas notation, is [ N e] 3 s 2 3 p 1. The valence shell of aluminum has three electrons, and per the octet rule, these three electrons are lost resulting in just 10 electrons and 13 protons. "1s"^2"2s"^2"2p"^6"3s"^2"3p"^1" The element with atomic number Electron Distribution in Different Orbits. Find more Chemistry widgets in Wolfram|Alpha. This means aluminum has 13 electrons in total, with two in the first energy level, eight in the second energy level, and three in the Oct 3, 2014 · 1 Answer. Be has four electrons, two in the 1s subshell and two in the 2s subshell. The electron configuration of hydrogen is 1s 1, as illustrated The electron configurations of these "exceptions" provide the answer why. 1: (a) The radius of an atom is defined as one-half the distance between the nuclei in a molecule consisting of two identical atoms joined by a covalent bond. 8. The first 10 electrons are in the filled first and second shells. Density: 2. However, it's easy to determine the configuration of electrons for heavier Aug 3, 2017 · the electron configuration of Aluminum is 1s22S22p63s23p1. Aug 20, 2020 · The first two subshells of the third shell are filled in order—for example, the electron configuration of aluminum, with 13 electrons, is 1s 2 2s 2 2p 6 3s 2 3p 1. Electron configuration. Since 1s can only hold two electrons the next 2 electrons for Iron go in the 2s orbital. [Ne] 3s^2 3p^1 The trick is to start at the next smallest noble gas and then complete the electron configuration as you normally would. Jan 18, 2017 · The element with atomic number 13 is aluminum. The electron configurations of silicon (14 electrons), phosphorus (15 electrons), sulfur Aluminum dication loses two electrons Al 2+: 1s 2 2s 2 2p 6 3s 2 3p 1 = Aug 14, 2020 · Such overlaps continue to occur frequently as we move up the chart. Aluminium has 3 electrons in valence shell [3] [6]. The valence electrons are “leftover” electrons that don’t fill a shell or satisfy the octet rule (except for noble gases) or 18 The electron configuration of magnesium is 1s 2 2s 2 2p 6 3s 2. An aluminium atom has 13 electrons, arranged in an electron configuration of 3s 2 3p 1, with three electrons beyond a stable noble gas configuration. 6. Nov 22, 2022 · The first two subshells of the third shell are filled in order—for example, the electron configuration of aluminum, with 13 electrons, is 1s 2 2s 2 2p 6 3s 2 3p 1. Solution. There must be no change in total spin Introduction to electron configurations. Electron configuration chart of all Elements is mentioned in the table below. 3s2. Electron Configuration of Hydrogen. For transition metals, the last s orbital loses an electron before the d orbitals. Then, add or remove electrons depending on the ion's charge. Electrons in successive atoms on the periodic table tend to fill low-energy orbitals first. The electron configuration and orbital diagram of helium are: The n = 1 shell is completely filled in a helium atom. Jan 15, 2024 · The electron configuration of Aluminum is 1s 2 2s 2 2p 6 3s 2 3p 1 Exercise \(\PageIndex{2}\) Using Figure \(\PageIndex{2}\) as your guide, write the electron configuration of the atom that has 20 electrons Nov 15, 2013 · A step-by-step description of how to write the electron configuration for Aluminum (Al). The valence shells of the inner transition elements consist of the ( n – 2) f, the ( n – 1) d, and the ns subshells. Exercise 2. This video discusses how to write electron configurations for H, Li, C and Sc. The next six electrons will go in the 2p orbital. Jul 3, 2016 · The electron configuration of aluminum can be written two ways. Oxidation states. The first two electrons in lithium fill the 1 s orbital and have the same sets of four quantum numbers as the two electrons in helium. So the full configuration is: Period 1 1s2 Period 2 2s22p6 Period 3 The electron configurations of a few elements are provided with illustrations in this subsection. The ground state electron configuration for aluminum is 1 s 2 2 s 2 2 p 6 3 s 2 3 p 1. What is Hund’s principle? Video: Fe, Fe2+, and Fe3+ Electron Configuration Notation. In the highest-numbered shell, the n = 4 shell, there are six electrons. As a general rule, a main-group element (except hydrogen or helium) tends to react to form a s 2 p 6 electron configuration. 3. Jul 19, 2023 · Referring to Figure 3. Based on the order of fill above, these 8 electrons would fill in the following order 1s, 2s and then 2p. # 1s^2 2s^2 2p^6 3s^2 3 p^1#. In order to write the Al electron configuration we first need to kn Aug 10, 2022 · The electron configuration of Aluminum is 1s 2 2s 2 2p 6 3s 2 3p 1 Exercise \(\PageIndex{2}\) Using Figure \(\PageIndex{2}\) as your guide, write the electron configuration of the atom that has 20 electrons Dec 17, 2014 · The ground state electron configuration for aluminum is 1s22s22p63s23p1. The ground state of aluminum is "1s"^2 "2s"^2 "2p"^6 "3s"^2 "3p"^1 In the ground state the "3s" electrons are unable to form bonds The electron configuration of Aluminum is 1s 2 2s 2 2p 6 3s 2 3p 1 Exercise \(\PageIndex{2}\) Using Figure \(\PageIndex{2}\) as your guide, write the electron configuration of the atom that has 20 electrons The first two subshells of the third shell are filled in order—for example, the electron configuration of aluminum, with 13 electrons, is 1s 2 2s 2 2p 6 3s 2 3p 1. Created by Sal Khan. In writing the electron configuration for Magnesium the first two electrons will go in the 1s orbital. The atomic number of aluminum is 13, which means it has 13 electrons. , crystalline aluminum fluoride [AlF 3] and aluminum chloride [AlCl 3]) the bare ion, Al 3+, formed by loss of these electrons, is known to occur. May 20, 2024 · The electron configuration of aluminum is 1s2 2s2 2p6 3s2 3p1. Aug 18, 2020 · Place the next two electrons in the 3s subshell ( 3s2) and the last one electron in the 3p subshell ( 3p1 ). In this case that is neon which is: Video: Cu, Cu+, and Cu2+ Electron Configuration Notation. 2 shows the electron configurations of the elements with atomic numbers 1 through 18. From this configuration, we can see that there are a total of 8 electrons in the n = 2 shell. A neutral Al atom also has 13 electrons. The atomic number of aluminum is 13. In writing the electron configuration for Copper the first two electrons will go in the 1s orbital. Find the Electron configuration of any Element on the Periodic Table of Elements with this simple, yet very useful widget. 3. Aluminum's first two electrons fall in the 1s orbital, and the Jun 20, 2023 · The total electron configuration is thus Nb [Kr]4d 3 5s 2 (Note that the principal quantum number of the d subshell is 4 ― one less than the number of the period. Jul 15, 2017 · The electron configuration for Aluminum is. Here’s the best way to solve it. If there are more electrons than protons, the ion has a negative charge and is called an anion. 2 2. Also, if you look at the table of electron configurations, it should be noted that Nb is an exception to the typical orbital filling rules) b) A similar procedure is followed for Pr Aug 31, 2020 · In this video we’ll use the Periodic table and a few simple rules to find the number of protons and electrons for the Aluminum ion (Al 3+). 7 g/cm 3 . (a) Na: 1 s2 2 s2 2 p6 3 s1. What definitely sets it apart is that it is usually used in pure form, alloyed or mixed with other metals or in non-metallic compounds. Now it is possible to find the orbital notation of aluminum very easily through electron configuration. 5 ℃. Table 5. Since aluminum's atomic number is thirteen, it has thirteen electrons. The electrons in aluminum’s filled 3 s 2 subshell are better at screening the 3 p 1 electron than they are at screening each other from the nuclear charge, so the s electrons penetrate closer to the nucleus than the p electron does and the p electron is more easily removed. Since 1s can only hold two electrons the next 2 electrons for magnesium go in the 2s orbital. 3 as your guide, write the electron configuration of the atom that has 20 electrons. Its electron configuration is: 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 10 4p 6 5s 2 4d 10 5p 6 6s 2 4f 14 5d 10 6p 6 7s The electron configuration of Aluminum is 1s 2 2s 2 2p 6 3s 2 3p 1 Exercise \(\PageIndex{2}\) Using Figure \(\PageIndex{2}\) as your guide, write the electron configuration of the atom that has 20 electrons May 30, 2024 · In aluminum the configuration of the three outer electrons is such that in a few compounds (e. Daniel Nelson. The atomic number of hydrogen is 1. Aug 31, 2016 · The electron configuration for aluminum is: 1s^2 2s^2 2p^6 3s^2 3p^1 To figure out the electron configuration of any element you will use the diagonal diagram (seen in the right side of video below) and use the Aufbau principle . A noble gas core is the noble gas element symbol enclosed in brackets: [He], [Ne], [Ar], [Kr], [Xe], or [Rn]. What is an electronic configuration? The electron configuration can be explained as that how electrons are placed in different energy levels of an atom of an element. hk ho ic zd ws hu bs kz js nm