Codeine, opioid analgesic molecule. It is used as a central analgesic, sedative, hypnotic, antinociceptive, antiperistaltic agent. Sheet of paper in a cage.. Vector illustration
Dextromethorphan hydrobromide skeletal structure. Antitussive compound schematic illustration. Simple diagram, chemical formula.
Opium Poppy or Papaver somniferum, vintage engraved illustration. Trousset encyclopedia (1886 - 1891).
Ionisation energy (IE) : Amount of energy required to remove the most loosely bound electron from an isolated gaseous atom to form a cation.
Lattice Enthalpy: The energy required to completely separate one mole of a solid ionic compound into gaseous constituent ions.