Shorthand electron configuration

Write the shorthand electron configuration and draw the ground-state orbital energy level diagram for the valence electrons in a sulfur atom. 

Use noble gas symbols to write shorthand electron configurations for the following elements. 

Write the shorthand electron configuration for each of the following elements, basing your answer on the location of the element in the periodic table. 

The electronic configuration for an element s ground state (Table 4.1) is a shorthand representation giving the number of electrons (superscript) found in each of the allowed sublevels (s, p, d, f) above a noble gas core (indicated by brackets). In addition, values for the thermal conductivity, the electrical resistance, and the coefficient of linear thermal expansion are included. 

A complete specification of how an atom s electrons are distributed in its orbitals is called an electron configuration. There are three common ways to represent electron configurations. One is a complete specification of quantum numbers. The second is a shorthand notation from which the quantum numbers can be inferred. The third is a diagrammatic representation of orbital energy levels and their occupancy. 

As the number of electrons In an atom Increases, a listing of all quantum numbers quickly becomes tedious. For example. Iron, with 26 electrons, would require the specification of 26 sets of 4 quantum numbers. To save time and space, chemists have devised a shorthand notation to write electron configurations. The orbital symbols (1 5, 2 p,... 

C08-0009. Determine the energy level diagram and shorthand notation for the electron configuration of the fluorine atom. 

C08-0058. Write the correct ground-state electron configuration, in shorthand notation, for C, Cr, Sb, and Br. 

Although this filling pattern conveys a lot of information, it is bulky. A shorthand method for giving the same information has been developed—the electronic configuration. 

The table shows the electronic configuration in spectroscopic and orbital box notation for the elements from scandium to zinc. [Ar] represents the electronic configuration of argon, which is Is 2s 2p 3s 3p . It is okay to use this shorthand here instead of writing out the full electron shells up to 3p. However, in the exam you should write out the spectroscopic notation for each element in full. 

An awful lot of detail goes into determining just how many electrons an atom has (see the previous sections). The next step is to figure out where those electrons live. Several different schemes exist for depicting all this important information, but the electron configuration is a type of shorthand that captures much of the pertinent information. 

Electron configuration A shorthand notation describing the distribution of electrons among the subshells of an atom. 

An electron of an atom can be identified using a shorthand notation called electron configuration. This gives the energy level, orbital type and number of electrons present. 

The periodic table provides information about each element, as shown in the key for Figure 4. This periodic table lists the atomic number, symbol, name, average atomic mass, and electron configuration in shorthand form for each element. 

Did you notice that the kernel configuration of the oxygen atom looks just like the electron configuration of the helium atom This leads to an interesting shorthand notation that is often used for electron configurations. We can replace the kernel configuration with the noble gas symbol that it matches. See the example here ... 

This may not seem to be such a space-saver now, but it will when we see electron configurations for the larger atoms. Let s compare the full electron configuration of potassium to the shorthand notation. A neutral atom of potassium, with an atomic number of 19, contains 19 electrons. 

Constructing the full electron configuration, as I reviewed in Lesson 3 f, I get ls22s2 2p6 3sz 3p6 4s2 3d6. We filled in the 3d section last, but the 4sz actually represents the valence shell, so it is not uncommon to rewrite this configuration as Is2 2s2 2p6 3s2 3p6 3d64s2, or with the shorthand notation [Ar] 3d6 4sz. 

Give the ground state electron configurations for the elements of Exercise 81 using shorthand notation—that is, l/2/2p, and so on. 

The orbital distribution of electrons can also be described with a shorthand notation that describes the arrangement of electrons in the sublevels without reference to their spin. This shorthand for helium s configuration is written s and is commonly called an electron configuration. The 1 represents the first principal energy level, the s indicates an electron cloud with a spherical shape, and the 2 shows that there are two electrons in that Ir sublevel. 

In the broadest sense, an electron configuration is any description of the complete distribution of electrons in atomic orbitals. Although this can mean either an orbital diagram or the shorthand notation, this text will follow the common convention of referring to only the shorthand notation as an electron configuration. For example,... 

The electron configuration. This shorthand notation consists of the principal energy level (n value), the letter designation of the sublevel (/ value), and the number of electrons ( ) in the sublevel, written as a superscript nl. The electron configuration of H is (spoken one-ess-one ) that of He is (spoken one-ess-two, not one-ess-squared ). This notation does not indicate electron spin but assumes you know that the two H electrons have paired (opposite) spins. 

Without referring to your textbook or a periodic table, write the full electron configuration, the orbital box diagram, and the noble gas shorthand configuration for the elements with the following atomic numbers. 

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