Complital

 Hydrogen , otherwise known as complital (from Swedish "Komplex ttal", meaning "complex numbers"), is the imaginary equivalent of Hydrogen; it is hypercompressed matter but through the squareification process to get imaginary matter. This implies that it has element number i.

Obtaining
The first step in obtaining complital is to hypercompress an object. The bigger the object, the higher of a chance this will work.

Hypercompression is done by compressing an object at a rate of omega fixed point meters/second or greater. This breaks the size limit; it allows negative diameter.

Next, squarification is done by converting the new negative diameter into negative area, creating a square portal with multiples of i for sidelengths. If matter touches this point, it will be randomly accelerated in the imaginary subdimension of a certain combination of dimensions, or even have a transformation applied.

There is a 2-65536 chance of obtaining Complital from these portals via input of Dark Matter, so good luck producing it.

Also, imaginary sidelengths aren't the only result of this process, but rather, are the most common. Quaternions, octonions, etc. can also be obtained with this method.

Behavior
Due to imaginary spin, which uses sin(xi) and cos(xi) instead of sin(x) and cos(x), complital sub-atomic particles accelerate/decelerate in various imaginary and normal dimensions towards other objects, due to the behavior of sin(xi) and cos(xi). Also, charge in the normal dimension is instead imaginary charge in the imaginary dimension, and charge in the imaginary dimension is instead negative charge in the normal dimension, meaning that complital lasts on average only 10 minutes before it gets pulled into the imaginary sub-dimension, so Imaginary Barrierium has to be implemented around the Complital element in order to stop it from going away.

Due to the fact that complital atoms have electrons as part of their nucleus rather than having electrons outside of the nucleus, complital isn't the most reactive element; a decent amount of the electric force gets absorbed by the nucleus. This absorption gets more and more effective as nucleus arrangement changes and element number increases in the imaginary subdimension.

Bonding
When bonding with another imaginary atom, the heavily compressed electrons inside move into the intersection point of the two atoms, forming a bond. These electrons typically expand from this process, which is normally harmless, but if imaginary atoms bond too many times, then the bonds either start falling apart or the electrons take up too much space within the atoms, causing the atoms to explode.

Usage
Complital's fast acceleration coupled with being one of the most reactive imaginary elements has lead to cars, planes, boats, etc. being made of complital. However, tons of fatalities have been caused due to drivers accelerating too fast.

To solve this issue, in

$$\omega + 1,024$$ CE, a method using Imaginary Barrierium which caused complital to decelerate when it hit a certain speed limit was born. This was further optimized to allow users to change the speed limit, and to allow users to decelerate/cancel deceleration whenever they wanted to.

Tricompluphene
The most common crystal, called "Tricompluphene", consists of a group of H 3 molecules. This substance acts like a noble gas due to the triangular structure, making it rigid. The molecules within normally don't move, and stays away from objects if they get too close. It floats away with enough force that it is good for airplane wings; it helps uplift a plane.

The Tetrahedron of Doom
The Tetrahedron of Doom repels far more than the Tricompluphene crystal. The Tetrahedron consists of H 4 ​​​​​tetrahedrons and H 6 octahedrons within a giant shell of electrons arranged in a tetrahedral shape. If this thing gets within 10 meters of an object, then it explodes into Tricompluphene crystals. This is why most of the reported cases of this crystal are found in the vaccums of space, and are typically around a few Tetrahedrons of Doom or Tricompluphene crystals (not too many though, or they will explode).

The Tetrahedron was used in the Hyperdimensionelemental War in order to blow up Guyihiogfjbejkvgfjem vnhefjhvbhrfcjejgcvhilergvhj9orfbv o[repkjhbvi0odgvhuic0=poihjgviop=\oihjgvcfto0tydr8UYTUR*O&TRYET%^&*&^RY%ETYUIOLHGJFDXTY*PUYFGDCXGVHJKLO:LHGFJDSRTY^&*(TURYE%^&*U(IOHGVCBXVDGRTU^&(*)6TUR5678976TRYE567890-765ERTWYI78065REY6789076TRDHFGJKILO, the guy that discovered Obamium. Widemanium was then named after him to honor his bravery in the war.