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


spacer4.1 The Periods
spacer4.2 The Groups
spacerGroup IA - Alkali metals
spacerGroup IIA - Alkaline earth metals
spacerGroup VIIA - Halogens
spacerGroup VIIIA - Noble gases
spacer4.3 Metals,
spacerNonmetals,
spacerSemimetals
spacerProperties of Metals
spacerProperties of Nommetals
spacerProperties of Semimetals
spacerSummary
spacer4.4 Metallic
spacerBonding
spacer4.5 Octet
spacerRule
spacer4.6 Ions
spacer4.7 Covalent
spacerBonding
spacerCovalent Bonding & Groups
spacer4.8 Atomic
spacerSize
spacer4.9 Ionic
spacerSize
spacerIonic Size of Metal Ions
spacerIonic Size of Nonmetal Ions
spacerIonic Size for Isoelectronic Series
spacer4.10 mp/bp
spacerTrends
spacer4.11 Metallic
spacerTrend

spacer** More
spacerspacerperiodic
spacerTrends**


spacerspacerProblems
spacer1 | 2 | 3
spacerspacerCrossword
spacerspacerHow well do you
spacerknow your
spacerPeriodic Table?

Unit #4 THE PERIODIC TABLE

4.7 - Covalent Bonding

The chemical bonds formed by sharing of electrons between non-metallic elements are referred to as covalent bonds.When the covalent bond is formed between two identical nonmetals, a nonpolar covalent bond is formed.

Take a look at the kind of molecules that have this kind of bond.

In total, there are seven elements that exist as diatomic molecules. These are the diatomic elements.

  1. the hydrogen molecule (H2),
  2. the oxygen molecule (O2),
  3. the nitrogen molecule (N2),
  4. the fluorine molecule (F2),
  5. the chlorine molecule (Cl2),
  6. the bromine molecule (Br2),
  7. the iodine molecule (I2)

Is there an easy way to remember these elements?
(Mouseover the image below to find out.)

Section 6.5
The Covalent Bond ..p128

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British Columbia Institute of Technology
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