The H 2 molecule is a good example of the first type of covalent bond, the nonpolar bond. Because both atoms in the H 2 molecule have an equal attraction (or affinity) for electrons, the bonding electrons are equally shared by the two atoms, and a nonpolar covalent bond is formed. good example of a polar covalent bond is the hydrogen-oxygen bond in the water molecule. Water molecules contain two hydrogen atoms (pictured in red) bonded to one oxygen atom (blue). Oxygen, with six valence electrons, needs two additional electrons to complete its valence shell. Each hydrogen contains one electron.
No one was ever convicted of the crimes, but one man confessed. Albert DeSalvo, already in custody for robbery and sexual assault, claimed to be the Strangler. Serving his sentence in Bridgewater State Hospital for his other crimes, DeSalvo escaped with two other inmates and triggered a massive manhunt. He was captured the next day, Feb. 25, 1967.
Introduction. The Boston Massacre occurred on March 5, 1770. A squad of British soldiers, come to support a sentry who was being pressed by a heckling, snowballing crowd, let loose a volley of shots. Three persons were killed immediately and two died later of their wounds; among the victims was Crispus Attucks, a man of black or Indian parentage.