Each oxoacid contains at least one unit

CHEMISTRY · Single correct

Problem

Each oxoacid contains at least one

X-\mathrm{OH}

unit, where

X

is a non-metal. The H atom of an

X-\mathrm{OH}

unit is ionisable, and the number of

-\mathrm{OH}

groups directly attached to the non-metal decides the basicity of the oxoacid. Which of the following oxyanions of pyro acids has central atoms in different oxidation states? (1)

\mathrm{S_3O_6^{2-}}

(2)

\mathrm{Si_2O_7^{6-}}

(3)

\mathrm{S_2O_5^{2-}}

(4) None

Related theory

Redox Reactions

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