What is the structure of BeCl₂ molecule in gaseous and solid state?

This is a short answer type question as classified in NCERT Exemplar

In the solid state BeCl₂ has a polymeric chain like structure. Be atom is surrounded by four Cl atoms among which two of them are bonded through covalent bond and other two are through co-ordinate bond. Structure of BeCl₂ is given by structure A.

In gaseous state beryllium chloride exists as dimer (Be₂Cl₄) which dissociates to the monomer at about 1200 K temperature which is linear in structure.

Structure of BeCl₂ in gaseous state is given by the structure B.

<p><span data-sheets-root="1">This is a short answer type question as classified in NCERT Exemplar</span></p><p>In the solid state BeCl₂ has a polymeric chain like structure. Be atom is surrounded by four Cl atoms among which two of them are bonded through covalent bond and other two are through co-ordinate bond. Structure of BeCl₂ is given by structure A.</p><p>In gaseous state beryllium chloride exists as dimer (Be₂Cl₄) which dissociates to the monomer at about 1200&nbsp;K temperature which is linear in structure.</p><p>Structure of BeCl₂ in gaseous state is given by the structure B.</p><div><div><picture><img src="https://images.shiksha.com/mediadata/images/articles/1743595202phpwEFGaa.jpeg" alt="" width="394" height="229"></picture></div></div>

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