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CHE 105/110 Introduction to Chemistry - Exercises and Answers

Lewis Electron Dot Diagrams

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QUESTION ANSWER

1.

Explain why the first two dots in a Lewis electron dot diagram are drawn on the same side of the atomic symbol.

1.

The first two electrons in a valence shell are s electrons, which are paired.

3.

What column of the periodic table has Lewis electron dot diagrams with two electrons?

3.

the second column of the periodic table

5.

Draw the Lewis electron dot diagram for each element.

  1. strontium
  2. silicon

5.

  1.  

    The Lewis diagram symbol of Strontium.
  2.  

    The Lewis dot diagram of Silicon.

7.

Draw the Lewis electron dot diagram for each element.

  1. titanium
  2. phosphorus

7.

  1.  

    The Lewis dot diagram of Titanium.
  2.  

    The Lewis dot diagram of Phosphorus.

9.

Draw the Lewis electron dot diagram for each ion.

  1. Mg2+
  2. S2−

9.

  1. Mg2+
  2.  

    The Lewis dot symbol of Sulfur ion with an overall charge of  -2.

11.

Draw the Lewis electron dot diagram for each ion.

  1. Fe2+
  2. N3−

11.

  1. Fe2+
  2. The Lewis dot diagram of Nitrogen ion with an overall charge of -3.

Click here to return to Chapter 8