The structures of beryllium chloride in solid state and vapour phase, are :

A. Chain and dimer, respectively 

B. Linear in both 

C. Dimer and Linear, respectively 

D. Chain in both


Solution: A

Structure of Beryllium Chloride in solid state: In solid state, BeCl2 combines with another BeCl2 to give Be2Cl4 by forming a coordinate bond and forms chain like structure. 




Structure of Beryllium Chloride in vapour state: In vapour state, BeCl2 exists as a single molecule having a linear structure Cl-Be-Cl and a bridged dimer. 


Hence, option (A) is correct.

NOTE: This question was asked in Chemistry section of NEET 2021 exam. The same question was asked in JEE Mains 2019 Exam.

You can also study about Chemical Compounds, their formula and uses. 

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