Classwork L6
September 9, 2011
Only actively participating students
should be listed at right.
Leader
Recorder
Reporter
1. Xenon reacts with 1, 2, or 3 equivalents of fluorine to make xenon fluorides. Show the electron dot
structure of each molecule.
(a) XeF2
(b) XeF4
(c) XeF6
Show what happens to the electron occupation of orbitals as xenon goes to XeF4.
Xenon in XeF4
Xenon
shell 5
shell 5
shell 4
shell 4
shell 3
2p
2s
shell 2
1s
shell 1
energy
energy
5p
4d
5s
4p
3d
4s
3p
3s
3p
3s
shell 3
2p
2s
shell 2
1s
shell 1
2. Draw diagrams (shell 4 and 5) to show the changes in xenon orbitals as it goes to XeF2 and to XeF6.
3. Draw a reaction coordinate diagram to illustrate the stepwise formation of XeF6 from Xe and F2. The
enthalpies of formation are XeF6, -279 kJ/mol; XeF4, -206 kJ/mol; XeF2, -107 kJ/mol.