Definition of chromophore - an atom or group whose presence is responsible for the colour of a compound. Definition of chromophore - an atom or group whose presence is responsible for the colour of a compound.
El Sereno, Los Angeles. El Sereno is a Los Angeles City neighborhood in the Eastside Los Angeles region of the County of Los Angeles, California. El Sereno as mapped by the Los Angeles Times. Cal State Los Angeles is in the lower right corner.
El Dorado County, officially the County of El Dorado, is a county located in the U.S. state of California. As of the 2010 census, the population was 181,058. The county seat is Placerville. El Dorado County is included in the Sacramento-Roseville-Arden-Arcade, CA Metropolitan Statistical Area. It is located in the historic Gold Country in the Sierra Nevada.