Question

The number of \(\pi\) and \(\pi^\ast\) \(\pi_{z}\) bonds present in \(XeO_3\) and \(XeO_4\) molecules, respectively are

• A. \(3,4\)
• B. \(4,2\)
• C. \(2,3\)
• D. \(3,2\)

Hint:

Count \(\pi\)-bonds by counting the number of double bonds in the molecule. \(XeO_3\) has 3, \(XeO_4\) has 4 double bonds.

Answer 1

The Correct Option is A

Step 1: Structure of \(XeO_3\).
In \(XeO_3\), xenon forms three \(Xe=O\) double bonds.
Each double bond contains one \(\pi\)-bond.
So total \(\pi\)-bonds:
\[ 3 \]
Step 2: Structure of \(XeO_4\).
In \(XeO_4\), xenon forms four \(Xe=O\) bonds in tetrahedral structure.
Each has one \(\pi\)-bond.
So total \(\pi\)-bonds:
\[ 4 \]
Final Answer:
\[ \boxed{3,4} \]