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Q.

Pick out the wrong statement

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a

Be like Al does not dissolve in alkalies

b

Oxides of both Be and Al are amphoteric

c

 Beryllium chloride like Aluminium chloride is covalent

d

 Carbides of both Be and Al react with water evolving methane

answer is A.

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Detailed Solution

 Due to high ionization energy and small size, Be is always form covalent bonds.

It does not dissolve in Alkalies. Be like Al dissolves in excess amount of alkali to gives beryllates and aluminates. Oxide of aluminum and beryllium are amphoteric in nature. Aluminum chloride and beryllium chloride are covalent.

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