All the bond angles in the molecule are 90° since the molecule is octahedral.
The structure of a molecule is predicted on the basis of the valence shell electron pair repulsion theory. This theory establishes the fact that the number of electron pairs in a molecule determines the shape of the molecule.
The structure of TeF6 is shown in the image attached. We can see from the image that the molecule is octahedral. Therefore, all the bond angles in the molecule are 90°.
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