A polyatomic ion, also known as a molecular ion, is a charged chemical species (ion) composed of two or more atoms covalently bonded or of a metal complex that can be considered to be acting as a single unit. The prefix poly- means many, in Greek, but even ions of two atoms are commonly referred to as polyatomic.
619. San Diego, CA is currently using one area code which is area code 619. In addition to San Diego, CA area code information read more about area code 619 details and California area codes. San Diego, CA is located in San Diego County and observes the Pacific Time Zone. View our Times by Area Code tool.
All blue areas are California area codes. Area code 760 is a California telephone area code that was split from area code 619 on March 22, 1997. Area code 442 is an overlay of 760 that became effective on November 21, 2009.It encompasses much of the southeastern and southernmost portions of the state.rea code 442 is an overlay of 760 that became effective on November 21, 2009. It encompasses much of the southeastern and southernmost portions of the state.