Final answer:
The bond angles in XeF4 are 90°, explained by the square planar molecular geometry due to the arrangement of two lone pairs and four bonding pairs around the central xenon atom. (option a)
Step-by-step explanation:
The bond angles in XeF4 are 90°. This is explained by the molecular geometry of XeF4, which is square planar as a result of its octahedral electron pair geometry with two lone pairs on the central xenon (Xe) atom.
The lone pairs are directly across from one another, leaving the four fluorine atoms to occupy the corners of a square plane around the xenon atom. The result is bond angles of 90° between each pair of fluorine atoms adjacent to the xenon atom.
Hence, the answer is option a