Prelude in Violet/Element 114

Element 114 (also known as Flerovium or Ununquadium) is an material element that appears in Prelude in Violet, having been briefly mentioned in Call of Duty: World at War and Call of Duty: Black Ops.

Brief History
Element 114 was discovered in 1927, just over seven years before the discovery of Element 115, in northeastern France on the former site of the Battle of Verdun. The element is highly unstable, making early recovery and research on it nearly impossible, but offered an incredibly efficient source of energy. By the early 1930s, with more deposits having been unearthed, experimentation on the element was well underway ranging from using it as city-wide power source to its inclusion in weapons of mass destruction. Widespread interest in the element would be short-lived once Element 115 was discovered, which was found to be much more stable while sacrificing some of the potential energy output. Some organizations, such as Group 935, would continue to research and experiment with Element 114 well into the 1940s and '50s.

Overview
Unlike its sister element, Element 114 is highly unstable and radioactive, making handling of it much more of an immediate danger. In exchange, the element offers substantially more raw power output than Element 115, which explains its usage outside of military experimentation. In order to efficiently use the element, more fail safes needed to be put in place to ensure successful usage of the element, even if it sacrifices some of its natural efficiency.

In Prelude in Violet, Element 114 appears as a grey-black rock with glowing yellow highlights or as a dull yellow metal when synthesized. The element is also shown to be a counter-balance to Element 115, being able to nullify or even reverse some of the latter's effects. Several weapons in the storyline, such as the Zersetzer Typ 205, make use of the element as its main power source.