Match the items of Column I and Column II on the basis of data given below.
$\begin{aligned} E_{F_{2} / F^{-}}^{\circ} = 2 .87 V, E_{{Li}^{+} / Li}^{\circ} = - 3 .5 V, \\ E_{{Au}^{3 +} / Au}^{\circ} = 1 .4 V, E_{{Br}_{2} / {Br}^{-}}^{\circ} = 1 .09 V \end{aligned}$

Column I Column II
A F₂ 1. Metal is the strongest reducing agent.
B Li 2. Metal ion which is the weakest oxidising agent.
C Au³⁺ 3. Non-metal which is the best oxidising agent.
D Br^- 4. Unreactive metal.
E Au 5. Anion that can be oxidised by Au³⁺.
F Li⁺ 6. Anion which is the weakest reducing agent.
G F^- 7. Metal ion which is an oxidising agent.

Difficult

Solution

$\begin{array}{l} A. \to (3) B. \to (1) C. \to (7) D. \to (5) \\ E. \to (4) F. \to (2) G. \to (6) \end{array}$
A. F₂ it a non-metal and best oxidising agent because SRP of F₂ is + 2.87 V.
B. Li is a metal and strongest reducing agent because SRP of Li is - 3.05 V.
C. Au³⁺ is a metal ion which is an oxidising agent as SRP of Au³⁺ is +1.40 V.
D. Br^- is an anion that can be oxidised by Au³⁺ as Au³⁺ (E^o = 1.40) is greater than Br^- (E^o = 1.09 V).
E. Au is an un reactive metal.
F. Li⁺ is a metal ion having least value of SRP (-3.05 V), hence it is the weakest oxidising agent.
G. F^- is an anion which is the weakest reducing agent as F^- / F₂ has low oxidation potential (-2.87 V).

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	Column I		Column II
A	F₂	1.	Metal is the strongest reducing agent.
B	Li	2.	Metal ion which is the weakest oxidising agent.
C	Au³⁺	3.	Non-metal which is the best oxidising agent.
D	Br^-	4.	Unreactive metal.
E	Au	5.	Anion that can be oxidised by Au³⁺.
F	Li⁺	6.	Anion which is the weakest reducing agent.
G	F^-	7.	Metal ion which is an oxidising agent.