The noble gases have closed -shell electronic configuration and are monoatomic gases under normal conditions. The low bp of the ligher noble bp of the lighter noble gases are due to weak dispersion force between the atoms and the absence of other interatomic interactions. The direct reaction of xenon with fluorine leads to a series of compounds with oxidation numbers +2,+4 and +6 . `XeF_(4)` reacts violently with water to give `XeO_(3)`. the compound of xenone exhibit rich stereochemistry and their geometries can be deduced considering the total number of electron pairs in the valence shell.
The structures of `XeO_(3)` is

Options

A. Linear
B. planar
C. Pyramidal
D. T-shaped

Explanation

To determine the structure of \( \text{XeO}_3 \) (Xenon trioxide), we need to analyze the valence shell electron pairs of xenon and how they interact with oxygen atoms.

### Step-by-Step Solution:

1. **Identify the Valence Electrons of Xenon:**
- Xenon (Xe) is a noble gas and has 8 valence electrons in its outer shell.

2. **Determine the Number of Bonds in \( \text{XeO}_3 \):**
- Xenon forms bonds with three oxygen atoms in \( \text{XeO}_3 \). Each oxygen atom typically forms a double bond with xenon in this compound.

3. **Count the Total Electron Pairs:**
- In \( \text{XeO}_3 \), xenon uses 6 of its 8 valence electrons to form 3 double bonds (3 bonds × 2 electrons per bond = 6 electrons).
- This leaves 2 electrons, which will be a lone pair on xenon.

4. **Determine the Geometry:**
- With 3 bonding pairs (from the double bonds with oxygen) and 1 lone pair, we can use VSEPR theory to predict the molecular geometry.
- The arrangement of 3 bonding pairs and 1 lone pair corresponds to a trigonal pyramidal shape.

5. **Visualize the Structure:**
- In the trigonal pyramidal geometry, the lone pair will occupy more space than the bonding pairs, causing the shape to be slightly bent or angular.

### Final Structure:
- The structure of \( \text{XeO}_3 \) is trigonal pyramidal due to the presence of one lone pair and three bonding pairs.