Course Introduction This course covers 2.2.: Electrons, Bonding and Structure from AS Level OCR A Chemistry. This section introduces the concept of atomic orbitals and develops a deeper understanding of electron configurations linked to the periodic table. The central role of electrons in ionic and covalent bonding is then studied. The important role of molecules is studied, including an explanation of polarity and intermolecular forces. Finally, this section looks at how bonding and structure contribute to properties of substances. This information could be assessed on any OCR Chemistry A AS- or A- level exam.