Which of the following statement(s) is/are correct?

Options

A. Rhombic sulphur is stable at room temperature
B. Monochlinic sulphur is stable at room temperature
C. Both rhombic and monochlinic sulphur has the molecular formula `S_(8)`
D. Both rhombic and monochlinic sulphur are soluble in `CS_(2)`

Answer

To determine which statements about sulfur are correct, let's analyze each statement step by step.

### Step 1: Analyze Statement 1
**Statement:** Rhombic sulfur is stable at room temperature.

**Analysis:**
Rhombic sulfur (α-sulfur) is indeed the stable form of sulfur at room temperature. This is a well-known fact in chemistry.

**Conclusion:** This statement is **correct**.

### Step 2: Analyze Statement 2
**Statement:** Monoclinic sulfur is stable at room temperature.

**Analysis:**
Monoclinic sulfur (β-sulfur) is not the stable form at room temperature; it is stable at higher temperatures. Therefore, at room temperature, rhombic sulfur is the stable form.

**Conclusion:** This statement is **incorrect**.

### Step 3: Analyze Statement 3
**Statement:** Both rhombic and monoclinic sulfur have the molecular formula S8.

**Analysis:**
Both allotropes of sulfur, rhombic and monoclinic, consist of eight sulfur atoms in their molecular structure, hence they both have the molecular formula S8.

**Conclusion:** This statement is **correct**.

### Step 4: Analyze Statement 4
**Statement:** Both rhombic and monoclinic sulfur are soluble in CS2.

**Analysis:**
Carbon disulfide (CS2) is a non-polar solvent. Both rhombic and monoclinic sulfur are non-polar substances, and according to the principle "like dissolves like," they will dissolve in CS2.

**Conclusion:** This statement is **correct**.

### Final Conclusion
The correct statements are **1, 3, and 4**.

### Summary of Correct Statements:
1. Rhombic sulfur is stable at room temperature. (Correct)
2. Monoclinic sulfur is stable at room temperature. (Incorrect)
3. Both rhombic and monoclinic sulfur have the molecular formula S8. (Correct)
4. Both rhombic and monoclinic sulfur are soluble in CS2. (Correct)

### Final Answer:
The correct statements are **1, 3, and 4**.

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