Choose the correct statements from the following.
(i) Beryllium is not readily attacked by acids because of the presence of an oxide film on the surface of the metal.
(ii) Beryllium sulphate is readily soluble in water as the greater hydration enthalpy of Be^{2+} overcomes the lattice enthalpy factor.
(iii) Beryllium exhibits coordination number more than four.
(iv) Beryllium oxide is purely acidic in nature.

Answers (1)

The answer is the option (i) and (ii) Be has diagonal relation with Al and forms a protective film of oxide and is not readily attacked by acids.

The high hydration enthalpy of Be^{2+} makes BeSO_{4} Soluble in water.

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