Assertion : Saline hydrides are non volatile, non conducting & crystalline solids.
Reason : Saline hydrides are compounds of hydrogen with most of the p-block elements.

Options

A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.
B. If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion.
C. If Assertion is True but the Reason is False.
D. If both Assertion & Reason are False.

Answer

To solve the question, we need to analyze the assertion and the reason provided.

### Step 1: Analyze the Assertion
The assertion states that "Saline hydrides are non-volatile, non-conducting & crystalline solids."
- Saline hydrides are indeed ionic compounds formed from hydrogen and alkali or alkaline earth metals (which are s-block elements).
- These compounds typically exist as crystalline solids.
- They are non-volatile because they have high melting and boiling points due to strong ionic bonds.
- They are also non-conducting in solid state because the ions are fixed in place within the crystal lattice and cannot move freely to conduct electricity.

**Conclusion for Step 1**: The assertion is correct.

### Step 2: Analyze the Reason
The reason states that "Saline hydrides are compounds of hydrogen with most of the p-block elements."
- This statement is incorrect. Saline hydrides are primarily formed with s-block elements (alkali and alkaline earth metals), not p-block elements.
- Examples include lithium hydride (LiH), sodium hydride (NaH), and magnesium hydride (MgH2), which are all derived from s-block metals.

**Conclusion for Step 2**: The reason is incorrect.

### Step 3: Final Conclusion
Since the assertion is correct and the reason is incorrect, we can conclude that the correct answer is that the assertion is true, but the reason is false.

### Answer:
The assertion is true, and the reason is false. Therefore, the correct option is C.

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