When heated in steam, Mg burns brilliantly producing-

Options

A. `Mg(OH)_(2)`
B. `MgO` and `H_(2)`
C. `MgO` and `O_(2)`
D. `MgO` and `O_(3)`

Answer

To solve the question "When heated in steam, Mg burns brilliantly producing-", we can follow these steps:

### Step 1: Understand the Reaction
When magnesium (Mg) is heated in the presence of steam (H2O in gaseous form), it reacts with water. This is a combustion reaction where magnesium burns in steam.

**Hint:** Consider the states of the reactants and products involved in the reaction.

### Step 2: Write the Chemical Equation
The reaction of magnesium with steam can be represented by the following chemical equation:

\[ \text{Mg (s)} + \text{H}_2\text{O (g)} \rightarrow \text{MgO (s)} + \text{H}_2 (g) \]

In this reaction, solid magnesium reacts with steam to produce magnesium oxide (MgO) and hydrogen gas (H2).

**Hint:** Remember that magnesium oxide is a solid, while hydrogen is a gas.

### Step 3: Identify the Products
From the chemical equation, we can see that the products of the reaction are magnesium oxide (MgO) and hydrogen gas (H2).

**Hint:** Think about the physical state of the products formed in the reaction.

### Step 4: Choose the Correct Option
Based on the products formed (MgO and H2), we can conclude that the correct answer to the question is:

- Magnesium oxide (MgO) is produced when magnesium burns in steam.

**Hint:** Look for options that mention magnesium oxide or hydrogen gas.

### Final Answer
When heated in steam, Mg burns brilliantly producing magnesium oxide (MgO) and hydrogen gas (H2).