Helion (later named helium) was named after the Greek sun god Helios (Greek Ἥλιος). First, helium is lighter than air, meaning the gas will raise the balloon and second, unlike the hydrogen that leaked from the floating airship Hindenburg, it doesn't explode over New Jersey. The first and lightest noble gas on the periodic table is used to fill balloons for two primary reasons. Contrary to common thought, these six gases all have uses appropriate for children. The six natural noble gases are all named after noble beings or the possessions or animal companions of noble beings in Greek, Roman or Japanese mythology. The one that occurs unnaturally cannot be listed here due to Uncyclopedia's compliance with the National Security Agency's current Prudery Policy. The six noble gases that occur naturally are helium (helion) (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn). This is why the noble gases are now restricted to group 18 of the periodic table. However, they were developed through experimentation to make them usable in interesting and unnatural ways. Under their original natural condition, they were all odorless, colorless, and unreactive, and thus safe for children. The noble gases are chemical elements that, as of 1969, are listed in group 18 of the periodic table.
NSA agents are watching you right now to fulfill their motto: "Vigilantes vos jugiter est talis benzoinopolium" ("Watching you constantly is such a gas").
Periodic table with the six natural noble gases outlined in red and the unnatural one censored for your protection by the National Security Agency.