covalent bonding in oxygen, nitrogen and CO2

• Covalent bonding


  Sharing of electrons between atoms
• Covalent bonding


  1. Overlapping of outer energy levels

  2. Sharing of electron pairs
• Single covalent bond


  • Shared pair of electrons
• Double covalent bond


  • Two shared pairs of electrons
• Triple covalent bond


  • Three shared pairs of electrons
• Carbon dioxide (CO2)


  • Carbon forms double covalent bonds with each oxygen atom
• Carbon dioxide is not on the AQA specification but is required for Edexcel students
• AQA students are recommended to watch this as they could be asked to work out the structure in their exam