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Question

Choose the correct statement among the following ?

A
Alkali metals react with H2 to form hydrides
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B
Alkali metal hydrides are ionic solid
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C
Alkali metals can react with halogens
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D
All of the above
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Solution

The correct option is D All of the above
Alkali metals react with H2 at about 673 K (Li at 1073 K) to form hydrides.
All the metal hydrides are ionic solid with high melting points.
The alkali metals readily react vigorously with halogens to form ionic halide, MX eexcept lithium which also forms covalent halides.
2M+X22MX
Hence all statements are true.


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