Lewis structures strategies, writing

Strategy Follow the four steps for writing Lewis structures. 

Strategy Write a Lewis structure for the N02 ion, following the usual steps. Then write the other resonance form by changing the position of the multiple bond. Do not change the skeleton structure. 

Strategy Write the Lewis structure of the molecule and classify it as AXmE . Using Table 7.3 or Figure 7.5, decide on the geometry of the molecule. Then decide whether the dipoles cancel, in which case it is nonpolar. 

STRATEGY Write a Lewis structure for the molecule by using the method outlined in Toolbox 2.1. Decide whether there is another equivalent structure that results from the interchange of a single bond and a double or triple bond. Write the actual structure as a resonance hybrid of these Lewis structures. 

STRATEGY Write down the Lewis structure and identify the electron arrangement around each central atom (each C atom, in this case). Treat each multiple bond as a single unit. Then identify the overall shape of the molecule (refer to Fig. 3.2 if necessary). 

Learning Goal The Strategies for writing the Lewis structures of polyatomic ions are similar to... 

Problem-Solving Strategy Writing a Lewis Structure... 

Use the Writing a Lewis Structure Problem-Solving Strategy for water (H2O). SOLUTION... 

When we write the Lewis structure of a molecule, we show all valence electrons. Hydrogen shares two electrons in a covalent bond. The second-row elements carbon through fluorine have octets of electrons either as nonbonded or bonded pairs. The electrons may participate in single, double, or triple bonds. We can use the following strategy to write Lewis structures. 

STRATEGY AND SOLUTION Reread the discussion on writing Lewis structures in Chapter 7. 

Describe the strategy for writing Lewis structures, and the use of formal charges for determining the plausibility of a given Lewis structure. 

At this point, let us incorporate a number of the ideas that we have considered so far into a specific approach to writing Lewis structures. This strategy is designed to give you a place to begin, as well as consecutive steps to follow to achieve a plausible Lewis structure. 

EXAMPLE 10-6 Applying the General Strategy for Writing Lewis Structures... 

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