Hydrogen atom Hydrogen atom A hydrogen atom is an atom of the chemical element hydrogen. The electrically neutral atom contains a single positively charged proton and a single negatively charged electron bound to the nucleus by the Coulomb force. Atomic hydrogen constitutes about 75% of the baryonic mass of the universe. In everyday life on Earth, isolated hydrogen atoms (called "atomic hydrogen") are extremely rare. Instead, hydrogen tends to combine with other atoms in compounds, or with itself to form ordinary (diatomic) hydrogen gas, H. "Atomic hydrogen" and "hydrogen atom" in ordinary English use have overlapping, yet distinct, meanings. For example, a
Atom Ant Atom" is available on the DVD "Saturday Morning Cartoons 1960s Vol. 1". The episode "Atom Ant Meets Karate Ant" is available on the DVD "Saturday Morning Cartoons 1960s Vol.2". The episode "The Big Gimmick" is available on the DVD "Best of Warner Bros. 25 Cartoon Collection Hanna-Barbera". On October 6, 2015, Warner Archive released "Atom Ant: The Complete Series" on DVD in region 1 as part of their Hanna–Barbera Classics Collection. This is a Manufacture-on-Demand (MOD) release, available exclusively through Warner's online store and Amazon.com. In 2016, "The Atom Ant Show" was made available for download via iTunes Store. Both