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
cameo noun [ C ] (JEWELRY) âº a piece of usually oval jewelry on which the shape of a head or another shape is represented against a background of a different color. âº a brief but noticeable part, esp. in a movie, television program, or performance in a theater, usually by someone who is famous: The former vice president makes a cameo appearance in the movie.