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Covalent Bonding

Covalent Bonding. Visit www.worldofteaching.com For 100’s of free powerpoints. Chlorine atom 2,8,7. 2 Chlorine atoms Outer shells only. Chlorine molecule Cl 2. Electrons shared. Each outer shell has 8 electrons. Forces (bonds) between atoms in the molecule very strong.

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Covalent Bonding

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  1. Covalent Bonding Visit www.worldofteaching.com For 100’s of free powerpoints

  2. Chlorine atom 2,8,7

  3. 2 Chlorine atoms Outer shells only

  4. Chlorine molecule Cl2 Electrons shared Each outer shell has 8 electrons Forces (bonds) between atoms in the molecule very strong Forces between molecules very weak Molecular or covalent compounds are usually gases or liquids – they have low melting points and low boiling points Molecules have no overall electric charge

  5. Covalent bonds can be represented in 3 ways:

  6. Cl Cl Cl Cl Chlorine Cl2 Cl Cl

  7. Covalent Bonds: Water H2O Methane CH4 Ammonia NH3 Hydrogen H2 Hydrogen Chloride HCl Oxygen O2 N.B. Oxygen has a double bond

  8. 16 O 8 Oxygen Oxygen atom 2,6

  9. O O 2 Oxygen atoms (outer shells only) Double covalent bond

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