Carbon–hydrogen bond C−H bond is generally regarded as being non-polar. In structural formulas of molecules, the hydrogen atoms are often omitted. Compound classes consisting solely of C–H bonds and C–C bonds are alkanes, alkenes, alkynes, and aromatic hydrocarbons. Collectively they are known as hydrocarbons. In October 2016, astronomers reported that the very basic chemical ingredients of life—the carbon-hydrogen molecule (CH, or methylidyne radical), the carbon-hydrogen positive ion (CH+) and the carbon ion (C+)—are the result, in large part, of ultraviolet light from stars, rather than in other ways, such as the result of turbulent events related to supernovae and young stars, as
Maria (given name) contrast, in northern Europe the name only rose to popularity after the Reformation. Because the name is so frequent in Christian tradition, a tradition of giving compound names has developed, with a number of such compounds themselves becoming very popular. Examples include Anna+Maria (Anne-Marie, Marianne, etc.) Maria+Luisa (French Marie-Louise,) Margarita+Maria (English Margaret Mary, French Marguerite Marie etc.), Maria+Antonia (Italian Maria Antonia, French Marie-Antoinette etc.) Maria+Helena (Italian Maria Elena, Spanish María Elena), Maria+Teresa, among numerous others. As a feminine given name, Maria ranked 109th in the United States as of 2015, down from rank 31 held during 1973–1975. Spelling variants of