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
a neckpiece or collar of lace, lawn, or the like, gathered or drawn into deep, full, regular folds, worn in the 16th and 17th centuries. 2. something resembling such a piece in form or position. 3. a collar, or set of lengthened or specially marked hairs or feathers, on the neck of an animal.