Concentrated nitric acid oxidises phosphours `(P)` into:

Options

A. `PH_(3)`
B. `P_(2)O_(5)`
C. `H_(3)PO_(3)`
D. `H_(3)PO_(4)`

Explanation

To determine the product of the reaction between phosphorus and concentrated nitric acid, we can follow these steps:

### Step 1: Identify the Reactants
The reactants in this reaction are phosphorus (P) and concentrated nitric acid (HNO3).

### Step 2: Write the Chemical Reaction
When phosphorus reacts with concentrated nitric acid, the reaction can be represented as:
\[ \text{P} + \text{HNO}_3 \rightarrow \text{H}_3\text{PO}_4 + \text{H}_2\text{O} + \text{NO}_2 \]

### Step 3: Identify the Products
From the balanced chemical equation, we can see that the products of the reaction are:
- Phosphoric acid (H3PO4)
- Water (H2O)
- Nitrogen dioxide (NO2)

### Step 4: Conclusion
Thus, concentrated nitric acid oxidizes phosphorus to form phosphoric acid (H3PO4) along with water and nitrogen dioxide.

### Final Answer
The correct answer is phosphoric acid (H3PO4).

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