Which of the following species given below have shape similar to `XeOF_(4)`?

Options

A. `XeO_(3)`
B. `IF_(5)`
C. `PCl_(5)`
D. `XeF_(5)^(o+)`

Explanation

To determine which species have a shape similar to `XeOF_(4)`, we first need to analyze the shape of `XeOF_(4)` itself.

### Step-by-Step Solution:

1. **Identify the Central Atom and Count Valence Electrons**:
- The central atom in `XeOF_(4)` is Xenon (Xe).
- Xenon has 8 valence electrons. The oxygen (O) contributes 6 valence electrons, and each fluorine (F) contributes 1 valence electron.
- Total valence electrons = 8 (from Xe) + 6 (from O) + 4 (from 4 F) = 18 valence electrons.

2. **Calculate the Steric Number**:
- The steric number is calculated as the number of bonded atoms plus the number of lone pairs on the central atom.
- In `XeOF_(4)`, there are 4 fluorine atoms and 1 oxygen atom bonded to xenon, which gives us 5 bonded atoms.
- Since xenon has 8 valence electrons and 5 are used for bonding, there are 3 electrons left, which means there is 1 lone pair.
- Therefore, the steric number = 5 (bonded atoms) + 1 (lone pair) = 6.

3. **Determine the Geometry and Shape**:
- A steric number of 6 indicates an octahedral geometry.
- However, with one lone pair, the shape becomes square pyramidal.

4. **Analyze Other Species**:
- We need to find species that also have a square pyramidal shape. We will calculate the steric number for each species.

a. **IF5**:
- Iodine (I) has 7 valence electrons, and 5 fluorine atoms contribute 5 electrons.
- Total = 7 + 5 = 12 valence electrons.
- Steric number = 5 (bonded) + 1 (lone pair) = 6. Shape = square pyramidal.

b. **PCl5**:
- Phosphorus (P) has 5 valence electrons, and 5 chlorine atoms contribute 5 electrons.
- Total = 5 + 5 = 10 valence electrons.
- Steric number = 5 (bonded) + 0 (lone pairs) = 5. Shape = trigonal bipyramidal (not similar).

c. **XeF5+**:
- Xenon has 8 valence electrons, and 5 fluorine atoms contribute 5 electrons.
- Total = 8 + 5 = 13 valence electrons.
- For the positive charge, we subtract 1 electron, so we have 12 electrons.
- Steric number = 5 (bonded) + 1 (lone pair) = 6. Shape = square pyramidal.

5. **Conclusion**:
- The species that have a shape similar to `XeOF_(4)` (square pyramidal) are **IF5** and **XeF5+**.

### Final Answer:
The species that have a shape similar to `XeOF_(4)` are **IF5** and **XeF5+**.