Which of the following statements are false?

  • A
    $BeCl_2$ is a linear molecule in the vapour state but it is polymeric in the solid state.
  • B
    Oxides of both $Be$ and $Ca$ are amphoteric.
  • C
    Carbides of both $Be$ and $Ca$ react with water to form acetylene.
  • D
    Both $(B)$ and $(C)$

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