Standard reduction potential at `25^(@)C` of `Li^(+)//Li,Ba^(+)//Ba,Na^(+)//Na and Mg^(2+)//Mg are -3.05,-2.90,-2.71 and -2.37 V ` respectively. Which one of the following is the strongest oxidising agent ?

Options

A. `Na^(o+)`
B. `Li^(o+)`
C. `Ba^(2+)`
D. `Mg^(2+)`

Answer

d

Explanation

More is the reduction potential of an oxidizing agent `(i.e.,-` less `-ve` value `)` it has more tendency to undergo reduction and hence acts as a strong oxidizing agent.
`:.` Reduction potentials are as follows `:`
`Li^(o+)|Li(-3.05) lt Ba^(2+)|Ba(-2.73)ltMg^(2+)|Mg(-2.71)`
Hence, `Mg^(2+)` acts as the strongest oxidizing agent.