How does polarity affect bond angles?
Theoretically, the bond angle X-A-X should be bigger in a compound
In this notation (from Gillespie-Nyholm's VSEPR's theory ) A = central atom; E = lone pair; X, Y, Z = atoms bonded to A.
This "effect" should be related to the electrostatic repulsion between polarized X atoms (negatively-shielded or positively-unshielded atoms) that would be less than the electrostatic repulsion between Z & Z.
My answer-explanation is also theoretical because it would be necessary to find three A, X, Z atoms in which the A-X and A-Z bond should have the same lenght, the X and Z atoms would have the same covalent radii, the only difference between X and Z being their electronegativity.
To check this answer we should find some specific couples of
If the question you have submitted is up to you, you deserve an A+ for it. If you can find similar molecules and data to check the theoretical answer, you deserve a double A++. If the question comes from the teacher, he or she should know the proper example to let you checking out :-)
Tentatively, I would try