In trimer form of sulphurc trioxide, each sulphur atom s bonded with:

Options

A. four oxygen atoms
B. three oxygenn atoms
C. two oxygen atoms
D. two sulphur atoms

Answer

To solve the question regarding the bonding of sulfur atoms in the trimer form of sulfur trioxide (SO3), we can follow these steps:

### Step 1: Understand the Molecular Formula
The trimer form of sulfur trioxide means that three sulfur trioxide molecules combine. Therefore, we can deduce the molecular formula for the trimer:
- Each SO3 molecule contains one sulfur atom and three oxygen atoms.
- For three SO3 molecules, the total would be:
\[ \text{Total Sulfur} = 3 \times 1 = 3 \text{ Sulfur atoms} \]
\[ \text{Total Oxygen} = 3 \times 3 = 9 \text{ Oxygen atoms} \]
Thus, the molecular formula for the trimer is \( S_3O_9 \).

### Step 2: Visualize the Structure
Next, we need to visualize the structure of \( S_3O_9 \). In the trimer form, the structure can be represented as follows:
- Each sulfur atom is connected to oxygen atoms.
- The central part of the structure has three sulfur atoms and three oxygen atoms, with additional oxygen atoms bonded to the sulfur atoms.

### Step 3: Determine the Bonding
Now, we analyze how many oxygen atoms are bonded to each sulfur atom:
- Each sulfur atom is bonded to three oxygen atoms in the central part of the structure.
- Additionally, each sulfur atom is bonded to one more oxygen atom from the outer part of the structure.

### Step 4: Count the Total Bonds
Thus, for each sulfur atom in the trimer form:
- It is bonded to a total of four oxygen atoms (three from the central structure and one from the outer structure).

### Conclusion
Therefore, in the trimer form of sulfur trioxide, each sulfur atom is bonded with **four oxygen atoms**.

### Final Answer
The correct option is **four oxygen atoms**.

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