Chemical bonding! - Key information

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Ionic Bonding:

  • All atoms become ion by either losing or gaining electrons.
  • This is because all atoms wish to have a stable octect like the group 0 (0r 8) elements.
  • Metal atoms lose electrons in their outer shell to become positive (+) ions.
  • Non metals gain electrons to become negative ions (-).
  • An ionic bond takes place between a metal (such as Na) and Clorine.

Covalent Bonding:

  • Takes place between 2 non-metal atoms.
  • Number of covalent bonds


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