The reaction of zinc with excess of aqueous alkali, evolves hydrogen gas and gives :

Question

$\mathrm{Zn}(\mathrm{OH})_{2}$

$\mathrm{ZnO}$

$\left[\mathrm{Zn}(\mathrm{OH})_{4}\right]^{2-}$

$\left[\mathrm{ZnO}_{2}\right]^{2-}$

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