Learning Goals
- Describe how covalent bonds are formed.
- Use dot-cross diagrams to illustrate the bonding in covalent compounds.
- Outline the properties of simple molecules
Covalent Bonding
- Covalent bonds occur between nonmetals, which could be of the same element, or different elements.
- The atoms involved in a covalent bond share one or more electron pair(s).
- Covalent bonding is the electrostatic force of attraction between the nuclei of the non-metallic atoms and their shared pairs of electrons.
- Atoms participate in sharing electron pairs, to gain a stable electronic configuration.
Formation of Covalent Bonds
- We draw dot and cross diagrams with overlapping valence electron shells, to illustrate how covalent bonds are formed. The diagrams below illustrate the formation of a single and a double covalent bond.
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