Q. 27

In the following A. Beryllium is not readily attacked by acids because of the presence of an oxide film on the surface of the metal.

B. Beryllium sulphate is readily soluble in water as the greater hydration enthalpy of Be2+ overcomes the lattice enthalpy factor.

C. Beryllium exhibits coordination number more than four.

D. Beryllium oxide is purely acidic in nature.

Answer :

Beryllium is chemically inert to air and water and is not readily attacked by acids because of the presence of a BeO film on the surface of the metal. BeSO4 is readily soluble in water. This is because Be2+ ions overcome the lattice enthalpy factor. Beryllium does not have a coordination number of more than 4. Beryllium oxide is not purely acidic but amphoteric in nature.

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