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
Children of the Atom (supplement) Universe will love it, others may find it a complete waste of time, especially as original statistics have already been published for most of the characters listed." Children of the Atom (supplement) Children of the Atom is a role-playing game supplement published by TSR in 1986 for the "Marvel Super Heroes" role-playing game. "Children of the Atom" is a supplement for the Advanced Set describing all of Marvel's mutant heroes and villains. "Children of the Atom" is an encyclopedia of mutant-kind, detailing their friends, enemies, homes and equipment. It includes a miniscenario, "Dreamchild." MA1 "Children of the Atom" was written