Draw the molecular structures of XeF 2 , XeF 4 and XeO 2 F 2 , indicating the location of lone pair of electrons.
Text Solution
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Number of electron pairs 
,
Number of bond pairs 
,
So, Number of lone pairs 
.
Thus 
is linear with 3 lone pairs occupying 3 equatorial positions of trigonal bipyramidal so as to minimize the repulsions.
Number of electron pairs 
,
Number of bond pairs 
,
So, Number of lone pairs 
.
Thus 
is linear with 2 lone pairs occupying 2 axial positions of octahedral pyramidal so as to minimize the repulsions.
Number of electron pairs (including super electron pairs) 
, Number of bond pairs 
,
So, Number of lone pairs 
.
Thus 
is see-saw with 1 lone pairs occupying one equatorial position and two double bonds occupying other two equatorial positions of trigonal bipyramidal so as to minimize the repulsions.
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