Question:
Which among the following is a polynuclear hydride?
Which among the following is a polynuclear hydride?
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Polynuclear hydrides contain more than one metal atom, as seen in diborane (\( \text{B}_2\text{H}_6 \)).
Updated On: Feb 4, 2026
- \( \text{B}_2\text{H}_6 \)
- \( \text{LiH} \)
- \( \text{NH}_3 \)
- \( \text{NaH} \)
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The Correct Option is A
Solution and Explanation
Step 1: Understanding polynuclear hydrides.
Polynuclear hydrides are hydrides that contain more than one metal atom in the structure. \( \text{B}_2\text{H}_6 \) (diborane) is an example of a polynuclear hydride, containing two boron atoms.
Step 2: Analyzing the options.
(A) \( \text{B}_2\text{H}_6 \): Correct — This is a polynuclear hydride, as it contains two boron atoms.
(B) \( \text{LiH} \): Incorrect. Lithium hydride is a simple hydride, not a polynuclear hydride.
(C) \( \text{NH}_3 \): Incorrect. Ammonia is not a hydride but a nitrogen compound.
(D) \( \text{NaH} \): Incorrect. Sodium hydride is a simple hydride, not a polynuclear hydride.
Step 3: Conclusion.
The correct answer is (A) \( \text{B}_2\text{H}_6 \), which is a polynuclear hydride.
Polynuclear hydrides are hydrides that contain more than one metal atom in the structure. \( \text{B}_2\text{H}_6 \) (diborane) is an example of a polynuclear hydride, containing two boron atoms.
Step 2: Analyzing the options.
(A) \( \text{B}_2\text{H}_6 \): Correct — This is a polynuclear hydride, as it contains two boron atoms.
(B) \( \text{LiH} \): Incorrect. Lithium hydride is a simple hydride, not a polynuclear hydride.
(C) \( \text{NH}_3 \): Incorrect. Ammonia is not a hydride but a nitrogen compound.
(D) \( \text{NaH} \): Incorrect. Sodium hydride is a simple hydride, not a polynuclear hydride.
Step 3: Conclusion.
The correct answer is (A) \( \text{B}_2\text{H}_6 \), which is a polynuclear hydride.
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