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) mid-19th century, facilitated by Dinah Craik's 1856 novel "John Halifax, Gentleman" whose title character's daughter is named "Muriel"; born in 1802 Muriel is said to be named "after the rather peculiar name of John's mother." Usage of "Muriel" peaked in the early 1920s and has subsequently declined. 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