Which of the alkali hydroxides is most basic?

K O H

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N a O H

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L i O H

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C s O H

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Solution

The correct option is C $C s O H$
$L i, N a, K, C s$ belong to alkali metals and basicity of hydroxide of these metals increases when going down the group so $C s O H$ is highest in basicity as compared to other alkali metal hydroxides.

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