Assertion: Tungsten has very high melting point.
Reason: Tungsten is a covalent compound.

Options

A. Statement-1 is true , Statement-2 is true and Statement-2 is correct explanation for Statement-1
B. Statement-1 is true, Statement-2 is True and Statement-2 is Not correct explanation for statement-1
C. Statement-1 is true, Statement-2 is False
D. Statement-1 is False, Statement-2 is True

Explanation

To solve the question regarding the assertion and reason about tungsten, we will analyze each statement step by step.

### Step 1: Analyze the Assertion
The assertion states that "Tungsten has a very high melting point."

- **Fact Check**: Tungsten (W) is known for having one of the highest melting points of all elements, approximately 3422 °C. This is a true statement.

### Step 2: Analyze the Reason
The reason states that "Tungsten is a covalent compound."

- **Fact Check**: Tungsten is a metal and primarily forms metallic bonds. While it can form covalent compounds in certain contexts, it is not accurate to classify tungsten itself as a covalent compound. Therefore, this statement is false.

### Step 3: Determine the Relationship Between Assertion and Reason
Now we need to determine if the reason provided is a valid explanation for the assertion.

- The assertion is true (tungsten has a high melting point) due to its strong metallic bonding, which arises from its large number of valence electrons (6 valence electrons: 4 from 5d and 2 from 6s).
- The reason is false (tungsten is not a covalent compound).

### Conclusion
Since the assertion is true and the reason is false, the correct answer to the question is that the assertion is true, but the reason is not a valid explanation for the assertion.

### Final Answer
- Assertion: True
- Reason: False
- Therefore, the assertion is correct, but the reason is incorrect.

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