Choose the correct option and explain why.
The geometrical shapes of XeF₅ ⁺, XeF₆ and XeF₈ ^{2 -} respectively are :-
1. Trigonal Bipyramidal, Octahedral, Square planar
2. Square based pyramidal, Distorted octahedral, square antiprismatic
3. planar pentagonal, octahedral, square antiprismatic
4. square based pyramidal, distorted octahedral, octahedral

option 2 is correct

first we calculate the N/2 value  =  ½ {no.of valence electrons of central atom + no. of monovalent atoms + anionic charge - cationic charge}

for the first compound it comes out to be 6
Now N/2 value = no.of lp +no. of bp
6   =    lp + 5
lp =1

So for lp =1 and bp = 5 shape is square based pyramidal
Similarly we can calculate for the rest also