Unit #1Unit #2Unit #3Unit #4Unit #5Unit #6Unit #7Unit #8Unit #9Unit #10
spacerUNIT # 5  
spacerspacerIntroduction
spacerspacerObjectives
spacerspacerReading


spacer5.1 Ionic
spacerBonding

spacerIonic Bonding in Sodium Chloride
spacerIonic Bonding in Magnesium Chloride
spacerProperties of Ionic Compounds
spacer5.2 Covalent
spacerBonding
spacer5.3 Polar Covalent
spacerBonding

spacer5.4 Bond
spacerDipoles

spacer5.5 Electroneg-
spacerativity

spacer5.6 Classification
spacerof Bond Type
spacer5.7 Polarity of
spacerMolecules
spacer5.8 Writing
spacerChemical
spacerFormulae
spacerWriting formulas containing simple ions
spacerWriting formulas containing  polyatomic ions
spacerUsing parentheses in formula writing
spacer5.9 Information in
spacera Chemical
spacerFormula
spacerNumber ratio of atoms
spacerNumber ratio of ions
spacer5.10 Oxidation
spacerNumbers
spacerAssignment of Oxidation Numbers


spacerspacerProblems
spacer1 | 2

Unit #5 COMPOUNDS

5.8 -
Chemical Formulas for Ionic compounds

5.8.1 - Writing Formulas for compounds containing simple ions

Follow these simple steps to write chemical formulas for ionic compounds containing simple ions of Group A elements.

Write the chemical formula involving calcium and nitrogen

Step 1: Write the symbols (including charge) of the cation and anion, with the cation listed first.
Step 2: Determine the smallest number of each kind of ion needed to give an overall charge of zero.
Step 3: Write the chemical formula, using the appropriate subscripts to make the compound neutral in charge.

 

Section 6.9
Writing Formulas ..p147


Back




All contents copyrighted © 1996-2006
British Columbia Institute of Technology
Chemistry Department - 3700 Willingdon Avenue
Burnaby, B.C. Canada V5G 3H2