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For which alkali metal, hydrogen gas is ...

For which alkali metal, hydrogen gas is not necessarily liberated on reaction with water?

A

Li

B

Na

C

Cs

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
D
All alkali metals liberate hydrogen on reaction with water.
`2M+2H_(2)Orarr2M^(+)+2OH^(-)+H_(2)`
(M=an alkali metal)
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