Question

consider the following lewis structure for xeo3 and answer the following three questions.
what is the ideal o - xe - o bond angle? (choose the closest value.)
90°
109°
120°
180°
what is the molecular geometry?
tetrahedral
trigonal planar
trigonal pyramidal
t - shaped
is the xeo3 molecule polar?
yes
no

Explanation:

Step1: Determine the electron - pair geometry

The central atom \(Xe\) has \(3\) bonding pairs and \(1\) lone pair. According to the VSEPR theory, the electron - pair geometry is tetrahedral.

Step2: Determine the bond angle

For a tetrahedral electron - pair geometry, the ideal bond angle is \(109^{\circ}\).

Step3: Determine the molecular geometry

Since there is \(1\) lone pair, the molecular geometry is trigonal pyramidal.

Step4: Determine polarity

In a trigonal pyramidal \(XeO_3\) molecule, the bond dipoles do not cancel out due to the non - symmetric shape, so the molecule is polar.

Answer:

1. \(109^{\circ}\)
2. trigonal pyramidal
3. Yes