When xenon hexafluoride is treated with `AsF_(5)` to form an ionic compound, the hybridisation of Xe and As will be respectively

Options

A. `sp^(3)d^(2),sp^(3)d`
B. `sp^(3)d, sp^(3)d^(2)`
C. `sp^(3)d^(3),sp^(3)d^(2)`
D. `sp^(3)d^(2),sp^(3)d^(2)`

Answer

To determine the hybridization of xenon (Xe) and arsenic (As) when xenon hexafluoride (XeF6) reacts with arsenic pentafluoride (AsF5) to form an ionic compound, we can follow these steps:

### Step 1: Understand the Reaction
When XeF6 reacts with AsF5, it forms an ionic compound. In this process, XeF6 loses an electron and becomes positively charged (XeF5^+), while AsF5 gains an electron and becomes negatively charged (AsF6^-).

### Step 2: Determine the Electron Configuration of Xenon
Xenon (Xe) has an atomic number of 54. In its ground state, the electron configuration is [Kr] 5s² 4d¹⁰ 5p⁶. In the context of XeF6, we consider its valence electrons, which are 8 (2 from 5s and 6 from 5p). However, since it loses one electron to form XeF5^+, it effectively has 7 valence electrons remaining.

### Step 3: Analyze the Hybridization of Xenon
In XeF5^+, xenon is surrounded by 5 fluorine atoms. The arrangement of these atoms around xenon suggests a trigonal bipyramidal geometry. To accommodate this geometry, xenon undergoes hybridization. The hybridization for a trigonal bipyramidal structure is sp³d.

### Step 4: Determine the Electron Configuration of Arsenic
Arsenic (As) has an atomic number of 33. Its electron configuration is [Ar] 4s² 3d¹⁰ 4p³. In AsF5, arsenic is surrounded by 5 fluorine atoms, and it can expand its valence shell to accommodate more than 8 electrons due to the availability of d-orbitals.

### Step 5: Analyze the Hybridization of Arsenic
In AsF6^-, arsenic is surrounded by 6 fluorine atoms. The geometry is octahedral, which requires sp³d² hybridization to accommodate the six sigma bonds formed with the fluorine atoms.

### Conclusion
Thus, the hybridization of xenon (Xe) in XeF5^+ is sp³d, and the hybridization of arsenic (As) in AsF6^- is sp³d².

### Final Answer
- Hybridization of Xe: sp³d
- Hybridization of As: sp³d²

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