1 The electron pair is equally shared, but controlled by the ligand. 2  The ligand is a lewis base, and acts as an electron pair donor. The metal is the electron acceptor and a lewis acid.  Most metals form cationic ions in solutions (electron acceptors), and participate in coordination complexes.
The United States is comprised of 50 states plus the District of Columbia. There are also five U.S. territories throughout the world: Guam, the U.S. Virgin Islands, American Samoa, Puerto Rico and the Northern Marianas Islands.
The refugees have been admitted to 138 cities and towns in a total of 36 states -- with California, Texas, Michigan, Arizona and Illinois taking the most, according to wrapsnet.org, where the U.S. government keeps its official numbers.