MCQ
Which one of the following is most stable ?
- A

- B

- ✓

- D







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$M{g^{2 + }} + 2{e^ - } \to Mg(s);\,\,E = - 2.37\,V$
$C{u^{2 + }} + 2{e^ - } \to Cu(s);\,\,\,E = + 0.33\,V$

complete $\frac{2}{3} ^{rd}$. If the value of rate constant is $4.3 \times 10^{-4}$