Multiple choice Which of the following was a first discovered compound of a noble gas? Xenon difluoride Xenon tetrafluoride Xenon hexafluoride Xenon tetroxide Reveal answer Fill a bubble to check yourself B Correct answer Explanation Xenon tetrafluoride is a chemical compound with chemical formula XeF4. It was the first discovered binary compound of a noble gas. It is produced by the chemical reaction of xenon with fluorine.