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
Muriel (given name) Muriel (given name) Muriel is a feminine given name in the English language. The name is of Gaelic origin and was originally spelt as "Muirgheal" ("muir" "sea", "gheal" "bright") in Irish and "Muireall" in Scottish Gaelic. Various versions have long been evident in Breton, Irish, and Scottish Gaelic languages. The name was very common in medieval England, typically in the form of "Merial", and unusually for a name of Celtic origin remained common after the Norman Conquest although rare from about 1300. Remaining common in Scotland as Muriel, the name in this form was introduced back into England in the