The electrical charge of the hydrogen atom is thought to be exactly zero. This is a consequence of the apparent equality of the magnitude of the electrical charges of the electron and the proton, and their opposite sign.
Necklace definition, a piece of jewelry consisting of a string of stones, beads, jewels, or the like, or a chain of gold, silver, or other metal, for wearing around the neck. See more. Dictionary.com
pin - a piece of jewelry that is pinned onto the wearer's garment. ring, band - jewelry consisting of a circlet of precious metal (often set with jewels) worn on the finger; she had rings on every finger; he noted that she wore a wedding band. tie clip - a piece of jewelry that holds a man's tie in place.