In which of the following molecule`//` ion all the bonds are equal?

Options

A. `SiF_(4)`
B. `IF_(7)`
C. `ClF_(3)`
D. `PCl_(5)`

Explanation

To determine which of the given molecules or ions has all equal bonds, we will analyze each option step by step.

### Step 1: Analyze SiF4
- **Structure**: SiF4 (Silicon Tetrafluoride) is a tetrahedral molecule.
- **Hybridization**: The hybridization can be calculated as follows:
- Silicon (Si) has 4 valence electrons.
- There are 4 fluorine (F) atoms, each contributing 1 electron.
- Total = 4 (Si) + 4 (F) = 8 electrons.
- Hybridization = 1/2 * (8) = 4, which corresponds to sp³ hybridization.
- **Bond Characteristics**: In sp³ hybridization, all bond lengths are equal, and all angles are also equal.

**Conclusion for SiF4**: All bonds in SiF4 are equal.

### Step 2: Analyze IF7
- **Structure**: IF7 (Iodine Heptafluoride) has a pentagonal bipyramidal shape.
- **Hybridization**: The hybridization can be calculated as follows:
- Iodine (I) has 7 valence electrons.
- There are 7 fluorine (F) atoms.
- Total = 7 (I) + 7 (F) = 14 electrons.
- Hybridization = 1/2 * (14) = 7, which corresponds to sp³d³ hybridization.
- **Bond Characteristics**: In a pentagonal bipyramidal structure, the axial bonds are longer than the equatorial bonds.

**Conclusion for IF7**: Not all bonds are equal.

### Step 3: Analyze ClF3
- **Structure**: ClF3 (Chlorine Trifluoride) has a T-shaped structure.
- **Hybridization**: The hybridization can be calculated as follows:
- Chlorine (Cl) has 7 valence electrons.
- There are 3 fluorine (F) atoms.
- Total = 7 (Cl) + 3 (F) = 10 electrons.
- Hybridization = 1/2 * (10) = 5, which corresponds to sp³d hybridization.
- **Bond Characteristics**: In a T-shaped structure, the axial bonds are longer than the equatorial bonds.

**Conclusion for ClF3**: Not all bonds are equal.

### Step 4: Analyze PCl5
- **Structure**: PCl5 (Phosphorus Pentachloride) has a trigonal bipyramidal structure.
- **Hybridization**: The hybridization can be calculated as follows:
- Phosphorus (P) has 5 valence electrons.
- There are 5 chlorine (Cl) atoms.
- Total = 5 (P) + 5 (Cl) = 10 electrons.
- Hybridization = 1/2 * (10) = 5, which corresponds to sp³d hybridization.
- **Bond Characteristics**: In a trigonal bipyramidal structure, the axial bonds are longer than the equatorial bonds.

**Conclusion for PCl5**: Not all bonds are equal.

### Final Conclusion
After analyzing all the given molecules, we find that only SiF4 has all equal bonds. Therefore, the answer to the question is:

**Answer**: SiF4

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