IONIC COMPOUNDS

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CHAPTER 4 IONICCOMPOUNDS
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• THE OCTET RULE

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• SIMPLE ION

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IONIZATION ENERGY ELECTRON AFFINITY
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POSITIVE IONS
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NEGATIVE IONS
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Group Number and Ions
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• EXAMPLES OF SIMPLE IONS

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Remember, Opposites attract!!
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IONIC COMPOUNDS
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• IONIC BOND FORMATION

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• IONIC COMPOUNDS

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• FORMULAS FOR BINARY IONIC COMPOUNDS

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FORMULAS FOR IONIC COMPOUNDS
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• EXAMPLES OF FORMULAS
• FOR IONIC COMPOUNDS
• Sodium and fluorine

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• Sodium and sulfur

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• Aluminum and oxygen

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ELECTRON-DOT STRUCTURES
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Note endings -ic versus ous.
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POLYATOMIC IONS
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NAMING POLYATOMIC IONS
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• NAMING POLYATOMIC IONS
• In addition to the ones in boxes, there are some
  names you just have to memorize
• OH-
• NH4
• CN-
• H3O
• chromate, dichromate

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• NAMING BINARY IONIC COMPOUNDS
• The stem names and ionic symbols for some common
  nonmetals are given in Table 4.2 and 4.3.

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• EXAMPLES OF IONIC COMPOUND NAMES
• Name K2O
• Name Mg3N2
• Name BeS
• Name AlBr3

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NAMING IONIC COMPOUNDS EXAMPLES NaBr CaBr2
Al2S3 Sodium oxide Magnesium nitride
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More Than One Cation?
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• NAMING IONIC COMPOUNDS WITH METALS WITH MORE THAN
  ONE CATION

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• NAMING IONIC COMPOUNDS WITH METALS WITH MORE THAN
  ONE CATION
• Example, the compounds CoO and Co2O3.

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NAMING SUMMARY
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WRITING FORMULAS FOR IONIC COMPOUNDS
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• ARRHENIUS ACID-BASE THEORY
• EXAMPLES
• HNO3 is an acid
• KOH is a base

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NAMING ACIDS
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NAMING ACIDS
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WHICH ACID IS IT?