Hydrogen compounds are only required to contain carbon. However, most of them also contain hydrogen, and because it is the carbon-hydrogen bond which gives this class of compounds most of its particular chemical characteristics, carbon-hydrogen bonds are required in some definitions of the word "organic" in chemistry. Millions of hydrocarbons are known, and they are usually formed by complicated synthetic pathways that seldom involve elementary hydrogen. Compounds of hydrogen are often called hydrides, a term that is used fairly loosely. The term "hydride" suggests that the H atom has acquired a negative or anionic character, denoted H, and is used when
Aventina (given name) the male name Aventin, itself a form of "Aventinus", a son of Hercules. The diminutives of "Aventina" are Aventinka (), Ava (), Venya (), Vena (), and Tina (). Aventina (given name) Aventina () is a Russian female first name. Its masculine version is Aventin. The name was included into various, often handwritten, church calendars throughout the 17th–19th centuries, but was omitted from the official Synodal Menologium at the end of the 19th century. However, according to other sources, this name is non-canonical. In 1924–1930, the name was included into various Soviet calendars, which included the new and often artificially