This solar system is composed of planets, which circular around the sun as a nucleus
In relation to the elements, the match is of fluorine
Pure fluorine is corrosive, pale yellow or brown gas that is a powerful oxidizing agent
It is the most reactive and most electronegative of all the elements and readily forms compounds with most other elements
It has an oxidation number of -1, except when bonded to another fluorine in F2 which gives it an oxidation of 0
Fluorine even combines with argon, krypton, xenon and radon
Even in dark, cool conditions, fluorine reacts explosively with hydrogen
The reaction with hydrogen occurs even at extremely low temperatures, using liquid hydrogen and solid fluorine
It is so reactive that metals and even water and other substances burn with a bright flame in a jet of fluorine gas
It is far to reactive to be found in elemental form
In moist air, it reacts with water to also form dangerous hydrofluoric acid
Fluorides are compounds that combine fluorine with some positively charged counterpart
They often consist of crystalline ionic salts