According to the IUPAC definition, a metallocene contains a transition metal and two cyclopentadienyl ligands coordinated in a sandwich structure, i.e., the two cyclopentadienyl anions are on parallel planes with equal bond lengths and strengths. Source: Internet
Although positively charged cations always move towards the cathode (hence their name) and negatively charged anions move away from it, cathode polarity depends on the device type, and can even vary according to the operating mode. Source: Internet
Biological role Fluoride anions are found in ivory, bones, teeth, blood, eggs, urine, and hair of organisms. Source: Internet
Beyond the classical Lewis bases and anions, all unsaturated molecules are also ligands, utilizing their pi electrons in forming the coordinate bond. Source: Internet
Despite its name a chalcopyrite does not contain dianion pairs, but single S 2− sulfide anions. Source: Internet
Because the superoxide releases the most energy when formed, the superoxide is preferentially formed for the larger alkali metals where the more complex anions are not polarised. Source: Internet