tetrafluoride

In 2005, Iran acknowledged converting yellowcake into uranium tetrafluoride, a step below the uranium hexafluoride needed for centrifuges.

Among the faculty stars is Physicist Howard H. Claassen, part of the three-man team that synthesized a new chemical compound, xenon tetrafluoride, from an inert element.

It's what nuclear chemists call uranium tetrafluoride, a grainy substance that can be used to make fuel for a nuclear reactor or fissile material for a bomb.

Inspectors also wanted to know why Iran had conducted experiments converting unreported uranium tetrafluoride into uranium metal--a process necessary for bomb production.

Large natural crystals of fluorides, such as calcium difluoride, titanium tetrafluoride, zirconium tetrafluoride, are extremely useful in optical instruments of various forms.