Electron Dot Diagram For Sodium

Learning Objectives

By the end of this section, you will be able to:

• Write Lewis symbols for neutral atoms and ions

Lewis Symbols of Monoatomic Elements

In nearly all cases, chemical bonds are formed by interactions of valence electrons in atoms. To facilitate our understanding of how valence electrons collaborate, a simple style of representing those valence electrons would be useful.

A Lewis electron dot diagram (or electron dot diagram or a Lewis diagram or a Lewis structure) is a representation of the valence electrons of an atom that uses dots around the symbol of the chemical element. The number of dots equals the number of valence electrons in the cantlet. These dots are arranged to the right and left and above and beneath the symbol, with no more than two dots on a side. (It does not thing what order the positions are used.)

For case, the Lewis electron dot diagram for calcium is but

Figure i shows the Lewis symbols for the elements of the third period of the periodic table.

Figure ane. Lewis symbols illustrating the number of valence electrons for each element in the third period of the periodic table.

Lewis symbols can besides be used to illustrate the formation of cations from atoms, as shown hither for sodium and calcium:Also, they can be used to testify the formation of anions from atoms, as shown beneath for chlorine and sulfur:Figure 2 demonstrates the utilise of Lewis symbols to show the transfer of electrons during the formation of ionic compounds.

Figure two. Cations are formed when atoms lose electrons, represented by fewer Lewis dots, whereas anions are formed by atoms gaining electrons. The total number of electrons does non change.

Example 1: Writing Lewis DoT SYmbols of Elements

What is the Lewis electron dot diagram for each element?

1. aluminum
2. selenium

Check Your Learning

What is the Lewis electron dot diagram for each chemical element?

1. phosphorus
2. argon

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Case 2: Writing Lewis DoT SYmbols of Ions

What is the Lewis electron dot diagram for each ion?

1. Ca²⁺
2. Oⁱⁱ⁻

Check Your Learning

The valence electron configuration of thallium, whose symbol is Tl, is sixs ²vd ¹⁰6p ⁱ. What is the Lewis electron dot diagram for the Tl⁺ ion?

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Key Takeaways

• Lewis electron dot diagrams use dots to stand for valence electrons around an atomic symbol.
• Lewis electron dot diagrams for ions accept fewer (for cations) or more (for anions) dots than the corresponding cantlet.

Exercises

1.  Explicate why the commencement two dots in a Lewis electron dot diagram are fatigued on the same side of the atomic symbol.

2.  Is information technology necessary for the kickoff dot effectually an atomic symbol to continue a detail side of the atomic symbol?

iii.  What cavalcade of the periodic table has Lewis electron dot diagrams with ii electrons?

4.  What cavalcade of the periodic table has Lewis electron dot diagrams that accept six electrons in them?

five.  Draw the Lewis electron dot diagram for each element.

a)  strontium

b)  silicon

six.  Draw the Lewis electron dot diagram for each element.

a)  krypton

b)  sulfur

7.  Describe the Lewis electron dot diagram for each element.

a)  titanium

b)  phosphorus

8.  Draw the Lewis electron dot diagram for each chemical element.

a)  bromine

b)  gallium

9.  Draw the Lewis electron dot diagram for each ion.

a)  Mg²⁺

b)  S²⁻

ten.  Draw the Lewis electron dot diagram for each ion.

a)  In⁺

b)  Br⁻

11.  Draw the Lewis electron dot diagram for each ion.

a)  Iron^two+

b)  Due north³⁻

12.  Draw the Lewis electron dot diagram for each ion.

a)  H⁺

b)  H⁻

Electron Dot Diagram For Sodium,

Source: https://courses.lumenlearning.com/suny-mcc-introductorychemistry/chapter/lewis-electron-dot-diagrams/

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