A) \[{{S}_{2}}{{O}_{8}}{{^{-}}^{2}}\]
B) \[{{S}_{2}}{{O}_{6}}{{^{-}}^{2}}\]
C) \[{{S}_{2}}{{O}_{5}}{{^{-}}^{2}}\]
D) \[{{S}_{2}}{{O}_{3}}{{^{-}}^{2}}\]
Correct Answer: A
Solution :
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