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The oxide of beryllium is amphoteric, while the oxides of other Group 2 elements are basic. This is because:

  1. (a) BeO has high lattice energy
  2. (b) Be²⁺ has high polarization power due to small size
  3. (c) BeO is covalent
  4. (d) All of the above
Answer and solution

Answer (d) All of the above

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