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What ion do alkalis form when added to water?

1 Answer

Nov 21, 2016

They form alkali metal cations and hydroxide ions.

Explanation:

And we represent this by the given reaction:

$M (s) + H_{2} O (l) \to M^{+} (a q) + H O^{-} (a q) + \frac{1}{2} H_{2} (g)$ $M(s) + H_2O(l) rarr M^(+)(aq) + HO^(-)(aq) + 1/2H_2(g)$

$M = L i, N a, K, e t c .$ $M=Li, Na, K, etc.$

The alkali metals become increasingly more reactive as we descend the Group.

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