Question

Identify the pair of hydrides which have polymeric structure:

• A. LiH, NaH
• B. BeH\(_2\), MgH\(_2\)
• C. NH\(_3\), CH\(_4\)
• D. B\(_2\)H\(_6\), H\(_2\)O

Hint:

Polymeric hydrides typically show extended bonding in their crystal structures or molecular frameworks.

Answer 1

The Correct Option is B

Both BeH\(_2\) and MgH\(_2\) are known to form polymeric structures. BeH\(_2\) can adopt a linear polymeric structure due to bridging hydrogen atoms, while MgH\(_2\) forms polymeric networks in its crystal lattice.