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
Bead, small, usually round object made of glass, wood, metal, nut, shell, bone, seed, or the like, pierced for stringing. Among primitive peoples, beads were worn as much for magical as for decorative purposes; hence, little variation was allowed in their shapes and materials.