An element Y is a white translucent solid at room temperature and exhibits various allotorpic forms. Some compounds of element Y find application in agricultural industry. Y forms two solid oxides which dissolve in water to form comparatively weak acids. The element Y is :

Options

A. Sulphur
B. Nitrogen
C. Phosphorous
D. Carbon

Explanation

To solve the question about identifying element Y, we can follow these steps:

### Step 1: Analyze the properties of element Y
The question states that element Y is a white translucent solid at room temperature and exhibits various allotropic forms. This suggests that Y is a non-metal, as most metals are not translucent and do not exhibit allotropy in the same way.

**Hint:** Consider non-metals that are known to exist in different forms.

### Step 2: Identify the allotropes
The mention of various allotropic forms narrows down the possibilities. One well-known element that has multiple allotropes is phosphorus, which can exist as white phosphorus, red phosphorus, and black phosphorus.

**Hint:** Recall common elements that have multiple allotropes and their characteristics.

### Step 3: Consider applications in agriculture
The question also mentions that some compounds of element Y find applications in the agricultural industry. Phosphorus compounds, such as phosphates, are widely used in fertilizers.

**Hint:** Think about elements that are essential for plant growth and their compounds.

### Step 4: Examine the oxides of element Y
The question states that element Y forms two solid oxides that dissolve in water to form comparatively weak acids. Phosphorus forms two important oxides: P4O10 (phosphorus pentoxide) and P4O6 (phosphorus trioxide). When these oxides react with water, they form phosphoric acid (H3PO4) and phosphorous acid (H3PO3), respectively.

**Hint:** Look for oxides of the element that can form acids upon hydrolysis.

### Step 5: Conclude the identity of element Y
Based on the analysis, the element Y is phosphorus. It is a white translucent solid, has allotropes, is used in agriculture, and forms weak acids from its oxides.

**Final Answer:** The element Y is phosphorus.