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
Chain is defined as to fasten, secure or confine. An example of to chain is to handcuff someone. 1  a flexible series of joined links, usually of metal, used to pull, confine, etc. or to transmit power. 2  tire chain.  bonds, shackles, etc.