Species having the formula `XZ_(4)` is given below `SF_(4)`, Define shape on the basis of the location of X and Z atoms.

Explanation

To determine the shape of the species SF₄ (where X = S and Z = F), we will follow these steps:

### Step 1: Identify the Central Atom
The central atom in SF₄ is sulfur (S).

### Step 2: Determine the Valence Electrons
Sulfur has 6 valence electrons.

### Step 3: Count the Bonding Atoms
In SF₄, there are 4 fluorine (F) atoms bonded to the sulfur atom.

### Step 4: Calculate the Steric Number
The steric number is calculated using the formula:
\[ \text{Steric Number} = \text{Number of Bonding Pairs} + \text{Number of Lone Pairs} \]

- **Bonding Pairs**: There are 4 fluorine atoms, which means there are 4 bonding pairs.
- **Lone Pairs**: Sulfur has 6 valence electrons and uses 4 for bonding with fluorine. Therefore, it has \( 6 - 4 = 2 \) electrons left, which form 1 lone pair.

Thus, the steric number is:
\[ \text{Steric Number} = 4 \text{ (bonding pairs)} + 1 \text{ (lone pair)} = 5 \]

### Step 5: Determine Hybridization
With a steric number of 5, the hybridization of sulfur is \( sp^3d \).

### Step 6: Determine the Geometry
The geometry corresponding to \( sp^3d \) hybridization is trigonal bipyramidal.

### Step 7: Consider the Lone Pair Effect
In a trigonal bipyramidal arrangement, the lone pair occupies one of the equatorial positions. The presence of the lone pair causes repulsion, which distorts the shape.

### Step 8: Define the Final Shape
Due to the lone pair's repulsion, the shape of SF₄ is not a perfect trigonal bipyramidal but rather a see-saw shape.

### Final Answer
The shape of SF₄ is a see-saw due to the presence of one lone pair on the sulfur atom, which affects the arrangement of the four fluorine atoms.

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