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JEE Main 20199 AprilEvening Shift
Exam
JEE Main
Year
2019
Date
9 April
Shift
Evening Shift
Subject
Chemistry
Chapter
s Block Elements

JEE Main 2019 · 9 April · Evening Shift · Chemistry · s Block Elements

The structures of beryllium chloride in the solid state and vapour...

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

Options

  1. Achain and chain
  2. Bdimeric and chain
  3. Cchain and dimeric
  4. Ddimeric and dimeric

Correct answer

C. chain and dimeric

Step-by-step solution

BeCl2 exists as (BeCl2)n polymeric chain in solid form, while BeCl2 exists as dimer in vapour phase because BeBe has vacant orbital and it is electron deficient.
In vapour state
The structures of beryllium chloride in the solid state and vapour phase, respectively, are:
In solid state
The structures of beryllium chloride in the solid state and vapour phase, respectively, are:
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