Question
Which element has maximum electron affinity
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(Given, $\mathrm{R}=8.3\; \mathrm{J} \mathrm{mol}^{-1} \mathrm{K}^{-1}$$, \ln \left(\frac{2}{3}\right)=0.4$ $\left.e^{-3}=4.0\right)$
$2 Al + 3MnO \to Al_2O_3 + 3Mn$
Which of the following is correct? (Atomic weights of $Mn = 55$ and $Al = 27$)