Answer: The smallest bond angle in the molecule x-y-x is

Step-by-step explanation:
According to VSEPR theory , each atom in a molecule will achieve a geometry that minimizes the repulsion between electrons in the valence shell of that atom.
In the given compound
, the number of electron pairs is 2 that means the hybridization will be
and geometry of the molecule will be linear as there are two bond pairs .The bond angle for linear geometry is 180° which reduces the electron electron repulsions and maximise stability.