Bonding

Learning Goals I am learning to form and name ionic compounds. I am learning to form and name molecular compounds.

Bonding Goal: To achieve a full octet (full valence shell)

Ionic bonding

Ionic Bonds Happens between a metal and a non-metal. Involves the transferring of electrons

Metals Metal loses electrons to become a cation (+ve charge) # of protons > # of electrons

Non-metals Non-metal gains electrons to become an anion (-ve charge) # of protons < # of electrons

Attraction Since opposite charges attract, metal and non-metal bond together. We can use Lewis diagrams to demonstrate this …

Examples 1: Draw the Lewis Dot Diagram and name the compound formed between Lithium and Fluorine. 2: Draw the Lewis Dot Diagram and name the compound formed by Calcium and Chlorine.

Naming Name the metal first Change the ending of the non-metal to “ide”

Molecular bonding

Molecular Bonding Happens between two non-metals. Involves the sharing of electrons. The sharing of electrons is called a covalent bond.

Draw the Lewis Dot diagram and name the molecule formed by 1 Nitrogen and 3 Hydrogen. Draw the Lewis Dot diagram and name the molecule formed by 1 Carbon and 4 Hydrogen.

Naming Covalent Compounds You write the name of the first element and the second element second element s ending is changed to ’s ending is changed to “-ide” We use prefixes to state the number of each element present (never put “mono” on the first element) One = mono- Two = di- Three = tri- Four = tetra- Five = penta

Example Provide names for the following compounds: N2O4 H2O CO2

Example Provide formulas for the following names: nitrogen trihydride phosphorus pentaoxide dicarbon tetraoxide

Learning Goals I am learning to form and name ionic compounds. I am learning to form and name molecular compounds.

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