Saved Bookmarks
| 1. |
Discuss properties of : (i) Xenon-fluoride compounds (ii) Xenon-oxygen compounds |
|
Answer» Solution :(i) Xenon-fluoride compounds : Physical PROPERTIES : `XeF_2, XeF_4` and `XeF_6` are colourless crystalline SOLIDS and sublime readily at 298 K. The structures of `XeF_2, XeF_4` and `XeF_6` are linear, square planar and distorted OCTAHEDRAL respectively and can be DEDUCED from VSEPR theory.   Chemical properties : Xenon fluorides readily hydrolyse even by traces of water. For example :` XeF_2` hydrolyse to give Xe, HF and `O_(2)` `2XeF_2(s) + 2H_2O(l)to2Xe(g) + 4HF(aq) + O_2(g)` Xenon fluorides react with fluoride ion acceptors to form cationic species and fluoride ion DONORS to form fluoroanions. `XeF_(2) + PF_(5) to [XeF]^(+) + [PF_(6)]^(-)`, `XeF_(4) + SbF_(5) to [XeF_(3)]^(+)[SbF_(6)]^(-)` `XeF_(6) + MF to M^(+)[XeF_(2)]^(-)`, (M=Na, K, Rb or Cs) (ii) Xenon-oxygen compounds : `XeO_3` is colourless explosive solid and has a pyramidal molecular structure.  `XeOF_4` is colourless volatile liquid and has square pyramidal molecular structure. 
|
|