Somerville, Alabama. The Somerville Courthouse was built in 1837 in the Federal style. It served as the county courthouse for Morgan County until the county seat was moved from Somerville to Decatur in 1891. It was listed on the National Register of Historic Places on March 24, 1972. Somerville is a town in Morgan County, Alabama, United States. It is included in the Decatur Metropolitan Area, as well as the Huntsville-Decatur Combined Statistical Area. As of the 2010 census, the population of the town was 724, up from 347.
Polyatomic Ions. Polyatomic ions are ions that are composed of two or more atoms that are linked by covalent bonds, but that still have a net deficiency or surplus of electrons, resulting in an overall charge on the group. A metal plus a polyatomic ion yields an ionic compound. Formulas and Names of Some Polyatomic Ions
Polyatomic ions: Polyatomic ions are electrically charges collections of two or more atoms. Typically in beginning classes people are not expected to predict polyatomic ion formulas. Polyatomic ions usually have a charge because the collection of atoms has either gained an extra electron or else it has lost an electron.Most of the common inorganic polyatomic ions have negative charges.This means the ion has more electrons than the neutral atoms that are in the ion.A polyatomic ion like phosphate, PO43- has three extra electrons beyond the electrons on the P and O atoms.ost of the common inorganic polyatomic ions have negative charges. This means the ion has more electrons than the neutral atoms that are in the ion. A polyatomic ion like phosphate, PO43- has three extra electrons beyond the electrons on the P and O atoms.