A) \[T{{i}^{3+}}\]salts are better oxidising agents
B) \[G{{a}^{+}}\]salts are better reducing agents
C) \[P{{b}^{4+}}\]salts are better oxidising agents
D) \[A{{s}^{5+}}\]salts are better oxidising agents
Correct Answer: D
Solution :
\[T{{i}^{3+}}+2{{e}^{-}}\xrightarrow[{}]{{}}T{{i}^{+}}\](more stable);\[T{{i}^{3+}}\]is an oxidising agent, (correct)\[G{{a}^{+}}\xrightarrow[{}]{-2{{e}^{-}}}G{{a}^{3+}}\] (more stable);\[G{{a}^{+}}\]is a reducing agent. (Correct)\[P{{b}^{4+}}+2{{e}^{-}}\to P{{b}^{2+}}\](more stable)\[P{{b}^{4+}}\]is an oxidising agent (correct) \[A{{s}^{5+}}+2{{e}^{-}}\xrightarrow[{}]{{}}A{{s}^{3+}}\](less stable); Thus,\[A{{s}^{5+}}\]cannot be reduced.\[A{{s}^{5+}}\]salts are not oxidizing agent.
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