Electron configurations writing, using periodic table

We can use the periodic table to check the electron configurations that we write. The periodic table can be thought of as being made up of s, p, d, and f sections, as shown in Figure 3-7d. 

Ateacher asks the class to write electron configurations for magnesium, iron, and tin. Lois does not have a periodic table available. Edward s advice is to use a memory aid that is shown below. Write a short paragraph to explain howto use this memory aid. 

For each of the elements below, use the aufbau principle to write the full and condensed electron configurations and draw partial orbital diagrams for the valence electrons of their atoms. You may consult the periodic table in Appendix C, or any other periodic table that omits electron configurations. 

In Section 4.8, we will learn to use the periodic table as a memory device to aid us in writing electronic configurations. 

Figure 4.11 Using the Periodic Table to Write Electronic Configurations...

Using the periodic table as an aid, write the detailed electronic configuration for each of the following elements ... 

The properties of the elements stem from their electronic configurations, and the properties place them in their locations in the periodic table. In each group, the elements have a characteristic outermost electronic configuration. The existence of the transition and inner transition elements stems from adding electrons to inner shells after outer shells have been started. Because the periodic table reflects the electronic structures of the atoms, it can be used as a memory device when writing electronic configurations. The ability to write and understand such configurations is a very important skill. (Section 4.8)... 

Write the outer electronic configuration of atoms of each of the following elements, using the periodic table as a memory aid (The atomic numbers are indicated for your convenience.) (a) 57La, (b) 92U, (c) gsRa, and ) g2Pb. 

In writing an atom s electron-dot structure, dots representing valence electrons are placed one at a time on the four sides of the symbol (they may be placed in any sequence) and then paired up until all are used. The ground-state electron configurations and electron-dot structures for the elements in the second period are shown in Table 5-5. 

You are given the element tin (Sn). Consult the periodic table to determine the total number of electrons an atom of tin has. Write out tin s electron configuration and determine the number of valence electrons it has. Then use the number of valence electrons and the rules for electron-dot structures to draw the electron-dot structure for tin. 

The periodic table may be used to write down the electron configuration of any element. The table may be divided up into blocks corresponding to the subshell designation of the most recent orbital to be filled by the building-up rule. Elements in the s- and p-blocks are known as main-group elements. The d-block elements are called transition metals. The f-block elements are called inner transition metals. 

An important skill that you learned in this chapter is how to use the periodic table to write electron configurations. It should be clear to you now that the organization of the table arises from the electron configurations of the elements. With this added insight, you are ready to learn in Chapter 8 about trends in properties and patterns of behavior of the elements. Knowing electron configurations and periodic trends will help you organize what may seem to be a vast amoimt of information. 

Use the periodic table to help you write electron configurations for the following atoms. Use the appropriate noble gas, inner-core abbreviations. 

Using only the periodic table or list of elements, write the electron configuration of each of the following atoms ... 

FOLLOW-UP PROBLEM 8.1 Use the periodic table to identify the element with the electron configuration l5 25 /. Write its orbital diagram, and give the quantum numbers of its sixth electron. 

Using the periodic table to locate each element, write the electron configuration of (a) V (b) Y (c) Hg. 

Headphones Neodymium magnets can be used in stereo headphones because they are powerful and lightweight. Write the electron configuration for neodymium. In which block of the periodic table is it ... 

The number of columns in each block corresponds to the maximum number of electrons that can occupy each kind of subshell. Recall that 2,6,10, and 14 are the numbers of electrons that can fill the s, p, d, and/subshells, respectively. Thus, the s block has 2 columns, the p block has 6, the d block has 10, and the/block has 14. Recall also that Is is the first s subshell, 2p is the firstp subshell, 3d is the first d subshell, and 4/is the first/ subshell, as Figure 6.30 shows. Using these facts, you can write the electron configuration of an element based merely on its position in the periodic table. 

Let s use the periodic table to write the electron configuration of selenium (Se, element 34). We first locate Se in the table and then move backward from it through the table, from element 34 to 33 to 32 and so forth, until we come to the noble gas that precedes Se. In this case, the noble gas is argon, Ar, element 18. Thus, the noble-gas core for Se is [Ar]. Our next step is to write symbols for the outer electrons. We do this by moving across period 4 from K, the element following Ar, to Se ... 

Use the periodic table to write the condensed electron configuration for (a) Co (element 27), (b) Te (element 52). 

Use the periodic table to write condensed electron configurations and determine the number of unpaired electrons in an atom. (Section 6.9)... 

---