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JEE Main20199 Apr 2019Evening ShiftChemistrys Block ElementsActual

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

BeCl 2 exists as (BeCl 2 )n polymeric chain in solid form, while BeCl 2 exists as dimer in vapour phase because B e has vacant orbital and it is electron deficient. In vapour state In solid state

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