Advanced Topic 667 of 1102 Inorganic Chemistry
Xenon Compounds
Xenon forms fluorides and oxides, challenging the idea that noble gases are inert.
In-depth explanation of Xenon Compounds
For many years the noble gases were thought to be completely inert, but in 1962 Neil Bartlett prepared xenon hexafluoroplatinate by reacting xenon with the strong oxidant PtF6. Xenon's first ionization energy, about 1170 kJ/mol, is low enough for it to bond with fluorine and oxygen. Xenon forms the fluorides XeF2, XeF4 and XeF6 and the oxides XeO3 and XeO4, with shapes predicted by VSEPR theory. XeF4 is square planar and XeO3 is pyramidal. These compounds are strong oxidizers, and several of them hydrolyse readily in water.
Going deeper: Xenon Compounds
Key ideas: Bartlett in 1962 made Xe+PtF6-. Xe reacts with F2 to give XeF2 (linear), XeF4 (square planar), XeF6 (distorted octahedral) depending on the ratio and conditions. Hydrolysis: XeF6 + 3H2O gives XeO3 (explosive, pyramidal) + 6HF; XeF4 disproportionates to Xe and XeO3. Shapes follow VSEPR: XeF2 has 3 lone pairs, XeF4 has 2, XeO3 has 1.
Common mistakes and connections: Students draw XeF4 as tetrahedral; it is square planar since the two lone pairs sit opposite. Using hybridization like sp3d2 is a model only; three-center four-electron bonding is a better account for XeF2. Xenon compounds are strong oxidizers. Links to VSEPR, hypervalent bonding and ionization energy trends.
Visualization of Xenon Compounds
Square planar XeF4 with two lone pairs on xenon, one of the xenon fluorides prepared after Bartlett in 1962. The interactive lesson shows this as a live animation or chart.
Worked example and use case
XeF4 is a square planar molecule with two lone pairs on the central xenon atom.
Frequently asked questions about Xenon Compounds
What is Xenon Compounds?
Xenon forms fluorides and oxides, challenging the idea that noble gases are inert.
Is Xenon Compounds a beginner, intermediate or advanced topic?
Xenon Compounds is a advanced topic in Inorganic Chemistry. It builds on beginner and intermediate topics, so review those first if needed.
What should I learn before Xenon Compounds?
Study these earlier topics in Inorganic Chemistry first: Oxoacids of Chlorine, Bleaching Powder, Noble Gases.
What comes after Xenon Compounds?
The next topics in Inorganic Chemistry are Uses of Noble Gases and Transition Metals General.
Can I practise Xenon Compounds with quizzes?
Yes. The interactive lesson includes a self-check question on Xenon Compounds, and the Inorganic Chemistry quiz draws on every topic in this area.
Where Xenon Compounds fits in Inorganic Chemistry
Xenon Compounds is topic 52 of 113 in Inorganic Chemistry.