Covalent Bonding Lewis Structures Webquest
Activity #1 - Introduction to Covalent Bonding
As opposed to ionic bonding in which a complete transfer of electrons occurs, covalent bonding occurs when two or more elements share electrons. 1 This most commonly occurs when two nonmetals have a similar tendency for electrons (generally to gain electrons). Because both of the nonmetals will want to fill their valence shells, the elements involved will share electrons in an effort to fill their valence shells.
How many valence electrons are in one atom of hydrogen? 1
How many valence electrons does hydrogen need to have a full first shell? 2
How does the hydrogen atom "pick up" another electron? by sharing with another element
What compound does hydrogen form? Covalent
How do hydrogen atoms make a covalent bond? by attaching to a different atom
Activity #2 - Introduction to Lewis Structures
| Number of Valence Electrons | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
|---|---|---|---|---|---|---|---|
| Example | Hydrogen (Alkali metals) | Helium (Noble gases) | Group 13 | Group 14 | Group 15 | Group 16 | Group 17 (Halogens) | Group 18 (Noble gases) |
| Lewis Structure (electron dot diagram) | H∙ | He: | ∙B∙ | ∙C∙∙ | ∙N∙∙∙ | :Ö∙∙ | :F∙ | :Ne: |