Question:

XeF4 + O2F2 → X + O
X + H2O → Y +2HF 
The shape of the molecules of X and Y respectively are: 

Updated On: Apr 12, 2025
  • Square planar, square pyramidal

  • Distorted octahedral, square pyramidal

  • Distorted tetrahedral. Distorted octahedral

  • Square pyramidal. Tetrahedral

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The Correct Option is B

Solution and Explanation

Step 1: Understand the Reaction and Molecular Shapes:
We are given two reactions involving compounds X and Y:

  • XeF4 + O2F2 → X + O2
  • X + H2O → Y + 2HF

Step 2: Analyze Molecule X:
In the first reaction, XeF4 (xenon tetrafluoride) reacts with O2F2 to form molecule X. XeF4 has a square planar shape because xenon is in the center with four fluorine atoms arranged in a square plane. The molecular shape of X, resulting from this reaction, will likely be distorted octahedral due to the influence of the bonding with other molecules such as oxygen.

Step 3: Analyze Molecule Y:
In the second reaction, X reacts with H2O to form Y and HF. The oxygen in Y is likely bonded to xenon, leading to a square pyramidal shape for Y. This is a typical structure for xenon compounds formed with oxygen in the center of the molecule.

Step 4: Determine the Correct Option:
Based on the analysis, the molecular shape of X is distorted octahedral, and the molecular shape of Y is square pyramidal.

Final Answer:
The shapes of molecules X and Y respectively are Distorted octahedral and square pyramidal. Therefore, the correct option is: B (Distorted octahedral, square pyramidal).

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