The correct order of $\mathrm{E}_{\mathrm{SR}^2 / \mathrm{M}}^0$ values with negative sign for the four…

The correct order of $\mathrm{E}_{\mathrm{SR}^2 / \mathrm{M}}^0$ values with negative sign for the four successive elements $\mathrm{Cr}, \mathrm{Mn}, \mathrm{Fe}$ and $\mathrm{Co}$ is
  1. $\mathrm{Mn}>\mathrm{Cr}>\mathrm{Fe}>\mathrm{Co}$
  2. $\mathrm{Cr}>\mathrm{Fe}>\mathrm{Mn}>\mathrm{Co}$
  3. $\mathrm{Fe}>\mathrm{Mn}>\mathrm{Cr}>\mathrm{Co}$
  4. $\mathrm{Cr}>\mathrm{Mn}>\mathrm{Fe}>\mathrm{Co}$

Solution

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Asked in: JEE Main 2010

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