Lewis electron-dot symbols

The Lewis electron-dot symbol is a way of representing the element and its valence electrons. The chemical symbol is written, which represents the atom s nucleus and all inner-shell electrons. The valence, or outer-shell, electrons are represented as dots surrounding the atom s symbol. Take the valence electrons, distribute them as dots one at a time around the four sides of the symbol and then pair them up until all the valence electrons are distributed Figure 11.1 shows the Lewis symbol for several different elements. 

Figure 11.1 Lewis electron-dot symbols for selected elements.

Describe the shell structure of the atom, and represent valence shell electrons of an atom by its Lewis electron dot symbol (Section 3.3, Problems 11 and 12). 

The valence electrons for an element can be depicted visually in an electron-dot symbol. (Electron-dot symbols are known by other names, including electron-dot structures, electron-dot diagrams, and Lewis electron-dot symbols.) An electron-dot symbol that shows chlorine s seven valence electrons is... 

Lewis Electron-Dot Symbols Depicting Atoms in Chemical Bonding... 

Before turning to the two bonding models, let s discuss a method for depicting the valence electrons of interacting atoms. In the Lewis electron-dot symbol (named for the American chemist G. N. Lewis), the element symbol represents the nucleus and inner electrons, and the surrounding dots represent the valence electrons (Figure 9.4). Note that the pattern of dots is the same for elements within a group. 

Figure 9.4 Lewis electron-dot symbols for elements in Periods 2 and 3. The element symbol represents the nucleus and Inner electrons, and the dots around It represent valence electrons, either paired or unpaired. The number of unpaired dots Indicates the number of electrons a metal atom loses, or the number a nonmetal atom gains, or the number of covalent bonds a nonmetal atom usually forms.

Depict main-group atoms with Lewis electron-dot symbols ( 9.1) (EPs 9.8-9.1 1)... 

Draw a Lewis electron-dot symbol for each atom ... 

Use condensed electron configurations and Lewis electron-dot symbols to depict the monatomic ions formed from each of the following atoms, and predict the formula of the compound the ions produce ... 

Lewis electron-dot symbol A notation in which the element symbol represents the nucleus and inner electrons, and surrounding dots represent the valence electrons. (271)... 

Normally, we use the word bond to describe the linkage between a particular pair of atoms as, for example, the H and Cl atoms in HC1, or the N and one of the H atoms in NH3. The student will already be familiar with the Lewis electron dot symbols for atoms and molecules whereby we would represent the HCl and NH3 molecules by (3-1) and (3-II). The basic idea of... 

The electrons involved in chemical bonding are the valence electrons, which, for most atoms, are tho.se in the outermost occupied shell. (Section 6.8) The American chemist G. N. Lewis (1875-1946) suggested a simple way of showing the valence electrons in an atom and tracking them during bond formation, using what are now known as either Lewis electron-dot symbols or simply Lewis symbols. 

Lewis Electron-Dot Symbols Bond Energy and Bond Length Electronegativity... 

The formation of Na from Na and CP from CI2 indicates that an electron has been lost by a sodium atom and gained by a chlorine atom. Electron transfer to form oppositely charged ions occurs when the atoms involved differ greatly in their attraction for electrons. NaCl is a rather typical ionic compound because it consists of a metal of low ionization energy and a nonmetal with a high affinity for electrons. (Sections 7.4 and 7.5) Using Lewis electron-dot symbols (and showing a chlorine atom rather than the CI2 molecule), we can represent this reaction as follows ... 

The Lewis electron-dot symbol of a main-group atom shows valence electrons as dots surrounding the element symbol. 

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