- The stone-carved Zimbabwe Bird is the national emblem of Zimbabwe, appearing on the national flags and coats of arms of both Zimbabwe and former Rhodesia, as well as on banknotes and coins (first on the Rhodesian pound and then on the Rhodesian dollar). It probably represents the bateleur eagle (Terathopius ecaudatus) or the African fish eagle (Haliaeetus vocifer). The bird’s design is derived from a number of soapstone sculptures found in the ruins of the medieval city of Great Zimbabwe.
- Ionic compound (Wikipedia)
In chemistry, an ionic compound is a chemical compound composed of ions held together by electrostatic forces termed ionic bonding. The compound is neutral overall, but consists of positively charged ions called cations and negatively charged ions called anions. These can be simple ions such as the sodium (Na+) and chloride (Cl−) in sodium chloride, or polyatomic species such as the ammonium and carbonate ions in ammonium carbonate. Individual ions within an ionic compound usually have multiple nearest neighbours, so are not considered to be part of molecules, but instead part of a continuous three-dimensional network. Ionic compounds usually form crystalline structures when solid.