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
Necklace Types. The most popular necklaces are made from a simple metal chain adorned with a gemstone or metal pendant. More contemporary necklace designs cater to bolder styles and tastes. Below are some of the most common types: Diamonds are the epitome of glamour and prestige, and a diamond necklace exemplifies tasteful elegance.