Naming and Writing Compounds

Names and Formulas have meaning!

Naming Ionic Compounds Naming Ionic Compound Steps (When given the formula) 1. Name the cation (metal) first. 2. Name the anion (nonmetal) second changing the ending to "ide."

Examples LiF _______________________________ Na2S _______________________________ MgCl _______________________________

Writing Ionic Compounds Writing Ionic Compounds Steps (When given the name) 1. Write the cation and anion with charges. 2. Use subscripts to balance out the charge to zero.

Examples Lithium Oxide ______________________________ Calcium Selenide _______________________________ Magnesium Fluoride _______________________________

Naming Covalent Compounds Naming Covalent Compound Steps (When given the formula) 1. Name the atoms present in the compound by adding the correct greek prefixes based on the number of atoms. 2. Do not use the prefix Mono if there is only one of the first listed element.

Examples P2F4 _______________________________ N2O4 _______________________________ NO2 _______________________________

Writing Covalent Compounds Writing Covalent Compounds Steps (When given the name) 1. Write formula for the compound in order of the atoms given. 2. Use the greek prefix to know the subscript that should be used for each atom.

Examples Dinitrogen Trioxide _______________________________ Phosphorus Triiodide _______________________________ Hexaboron Monosilicide _______________________________