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Preparation of Hydrogen from Steam

The lightest ...

Question

The lightest metal in the periodic table -

A

Na

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B

Hg

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C

Ca

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D

Li

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Solution

The correct option is D
Li

Lithium is much reactive and has too low a melting point. A violent reaction takes place on contact between lithium and water .The heat of reaction is enough to melt the lithium metal and ignite the hydrogen gas that is produced by the reaction.

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Preparation of Hydrogen from Steam

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