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Which of the following is not the point ...

Which of the following is not the point of difference between Be and other alkline earth metals?

A

Beryllium does not exhibit co-ordination number more than 4

B

Oxide of Beryllium is amphoteric in nature

C

Beryllium does not form `BeH_2` directly upon heating with `H_2`

D

Beryllium combines with halogen at elevated tempareture to form halides

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