Question

what is the hybridisation of [ XeF8]2-?

Answer 1

Answer:

hybridisation of XeF8 2- is p3d5

Answer 2

Answer:

According to VSEPR its hybridization should be sp3d4 but it's actually p3d5.

Explanation:

Here the lone pair does not take part in hybridization and while calculating the sterric no i.e

Sterric no.(SN) = 1/2 [ V+M-C+A] the negative charge is not taken in consideration so S.N equals 1/2 [8+8] = 8

Since the lone pair is not participating in hybridization so there is only one way for hybridization in sterric number 8

when 3 p orbitals combine with 5 d orbitals.

Hence the hybridization is p3d5.