The number of S-S bonds in sulphur trioxide is

Options

A. three
B. two
C. one
D. zero

Answer

To determine the number of S-S bonds in sulfur trioxide (SO₃), we can follow these steps:

### Step 1: Understand the molecular formula
Sulfur trioxide is represented by the chemical formula SO₃. This indicates that there is one sulfur (S) atom and three oxygen (O) atoms in the molecule.

**Hint:** Identify the elements present in the compound and their quantities.

### Step 2: Draw the Lewis structure of SO₃
In the Lewis structure of SO₃, the sulfur atom is in the center, surrounded by three oxygen atoms. Each oxygen atom forms a double bond with the sulfur atom. The structure can be represented as follows:

```
O
||
O==S==O
||
O
```

Here, sulfur forms double bonds with each of the three oxygen atoms.

**Hint:** Visualize the arrangement of atoms and the types of bonds formed in the molecule.

### Step 3: Identify the types of bonds present
In the Lewis structure, we see that sulfur is bonded to three oxygen atoms through double bonds. There are no sulfur-sulfur (S-S) bonds present in this structure.

**Hint:** Count the types of bonds between the atoms to determine if any S-S bonds exist.

### Step 4: Conclude the number of S-S bonds
Since there are no S-S bonds in the structure of SO₃, the number of S-S bonds is zero.

**Hint:** Summarize your findings to answer the question clearly.

### Final Answer
The number of S-S bonds in sulfur trioxide (SO₃) is **0**.