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

5.9 - Information in a Chemical Formula

The chemical formula tells us:

  • Number ratio of all the different atoms in the chemical formula (section 5.9.1).
  • Number ratio of the ions in the chemical formula (section 5.9.2).

Section 6.9
Writing Formulas ..p147


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