What happens when magnesium is burnt in airr and the products X and Y are treated with water?
`Mg overset("Air")to underset(P)underset(darr H_(2)O)(X)+ underset(P+Q)underset(darr H_(2)O)(Y)`

Options

A. `X-MgO,Y-Mg(OH)_(2),P-Mg(OH)_(2),Q-N_(2)`
B. `X-MgO,Y-Mg_(3)N_(2),P-Mg(OH)_(2),Q-NH_(3)`
C. `X-MgO, Y-Mg_(3)N_(2),P-Mg(OH)_(2),Q-N_(2)`
D. `X-MgO,Y-MgCO_(3),P-Mg(OH)_(2),Q-CO_(2)`

Explanation

To solve the question, we will break down the process step-by-step.

### Step 1: Reaction of Magnesium with Air
When magnesium is burnt in air, it primarily reacts with oxygen (O₂) to form magnesium oxide (MgO) and with nitrogen (N₂) to form magnesium nitride (Mg₃N₂). The overall reaction can be summarized as:

\[ 3Mg + O_2 + N_2 \rightarrow MgO + Mg_3N_2 \]

### Step 2: Identifying Products
From the above reaction, we can identify:
- Product X: Magnesium Oxide (MgO)
- Product Y: Magnesium Nitride (Mg₃N₂)

### Step 3: Reaction of Product X with Water
Now, we treat Product X (MgO) with water (H₂O). The reaction is as follows:

\[ MgO + H_2O \rightarrow Mg(OH)_2 \]

This means that when magnesium oxide reacts with water, it forms magnesium hydroxide (Mg(OH)₂).

### Step 4: Reaction of Product Y with Water
Next, we treat Product Y (Mg₃N₂) with water. The reaction is:

\[ Mg_3N_2 + 6H_2O \rightarrow 3Mg(OH)_2 + 2NH_3 \]

In this reaction, magnesium nitride reacts with water to produce magnesium hydroxide and ammonia (NH₃).

### Step 5: Summary of Products
Now we summarize the products:
- From Product X (MgO), we get:
- P: Magnesium Hydroxide (Mg(OH)₂)

- From Product Y (Mg₃N₂), we get:
- Q: Ammonia (NH₃)

### Final Answer
Thus, the final products when magnesium is burnt in air and the products are treated with water are:
- X: Magnesium Oxide (MgO)
- Y: Magnesium Nitride (Mg₃N₂)
- P: Magnesium Hydroxide (Mg(OH)₂)
- Q: Ammonia (NH₃)