Exomatter

Individually, exoparticles have a slightly lower mass than their standard counterparts, and six times the electric charge. Despite their lower mass, they tend to be denser - especially at higher numbers - primarily due to the additional contraction effects a greater charge creates.

Exomatter was exceedingly rare in the Galaxy until Albred Mynoth discovered the Mynoth process. Attempts to keep it secret from the Three Empires only accelerated the coming of the Purge, and they eventually learned the process through the Holocene and supplicants anyway.

Because the energy of activation is so high, exomatter and compounds of it tend to be transparent, white, or extremely reflective, though a full spectrum of colors is possible. When heated to extreme temperatures (about 3,000K), they start to glow 'purple hot', as emitting as a blackbody requires the electrons first accumulate enough energy to emit it in the first place, which begins in the X-Ray spectrum. As temperature increases, higher energy levels are reached more easily, and the full spectrum is eventually covered and they glow 'white hot'. While this presents a mild hazard to things susceptible to gamma and ultraviolet radiation in everyday use, the sheer utility of these materials is considered to outweigh the risk.

Exotic matter compounds are listed with the X: prefix. For example, X:TiO2 signifies the exotic variant of titanium dioxide.

Only twenty-three exoelements are possible. The uses listed are by no means even remotely complete:

exohydrogen has a melting point of nearly 750 Kelvin and a boiling point of a bit over 1,000 K in vacuum. Alone, it makes an excellent superconductor, capable of performing as such up until it melts. Of course, it is also useful in a wide variety of compounds.
exohelium, like normal helium, is not solid under normal pressures short of the megapascal range. It does have a significantly higher boiling point - nearly 200 Kelvin, making its superfluid properties far easier to take advantage of. Amongst other uses, it is the perfect lubricant when in sealed conditions.
exolithium sees some use as a component in chemical fuels, namely with exoflourine. The compound between these two is sometimes called rocket salt.
exoberyllium is an extremely useful exotic element with a melting point close to twenty thousand Kelvin. It functions as a p-type dopant in exotic computers, and is also used as the prime component in ultralight alloys. Like normal beryllium, it has a significant cross-section, making it useful as a neutron reflector and neutrino detector.
exoboron is largely used as an alloying and composite material rather than in any pure form.
exocarbon has the highest sublimation point of all forms of exomatter - in excess of two hundred thousand Kelvin. Individually, its bonds are also extremely strong, and its presence is the key component in the various 'exosteels'. Likewise, its ready use in many compounds makes it one of the most common exoelements by mass. It is the most common exotic semiconductor.
exonitrogen compounds are usually used as 'mobility control agents' in pseudo-organic materials like those that make up homo excelsior. Essentially, they help keep the body mobile at lower temperatures.
exooxygen compounds have similar uses, but also function as corrosion control such as when combined with exotitanium, as well as forming other compounds.
exofluorine is primarily used as a fuel and exotic corrosive agent. While expensive, it is the only means by which 'mundane' vessels can keep up with the runeships.
exoneon is similar to exohelium in many respects, even to the point of exhibiting high-temperature superfluidity. It is somewhat less useful and thus does not see much production.
exosodium is primarily an alloying and compound agent.
exomagnesium typically an alloy with exoaluminum.
exoaluminum forms the basis for the middleweight exosteel.
exosilicon sees frequent use in solar panel arrays.
exophosphorus is used for p-type junctions in exotic computing.
exosulfur is an important compound agent.
exochlorine is an important compound agent.
exoargon is notable for being the first 'noble gas' that is actually liquid at room temperature. It is a bit odd as it doesn't make things wet, which can confuse people not familiar with it.
exopotassium is rarely used, but does see some function in more complex compounds.
exocalcium is often used in exotic ceramics and cements, as well as being a common alloying agent.
exoscandium makes up the heaviest group of exosteels. It has a slightly higher strength to weight ratio than exotitanium.
exotitanium is usually used for high-temperature demands. It is rather dense, and though it possesses extreme strength (in the low terapascal range) its use is limited. It does function as a rather potent neutrino detector, however.
exovanadium is the second-densest substance known. A meter of it blocks roughly .02% of passing neutrinos, and is thus used heavily by the missions.