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| 1. |
For the first row transition metals, the E^(@) values are {:(e^(@),V,Cr,Mn,Fe,Co,Ni,Cu),((M^(2+)//M),-1.18,-0.91,-1.18,-0.44,-0.28,-0.25,+0.34):} Explain the irregularity in the above values. |
| Answer» Solution :This is because `E^(@)` values are the sum of sublimation ENTHALPY , ionization enthalpy , hydration enthalpy etc. The irregularity is due to the IRREGULAR variation of ionization enthalpies `(IE_(1)+IE_(2))` and also the sublimation enthalpies which are RELATIVELY MUCH lower for Mn `( 240 kJ mol^(-1))` and `V ( 470 kJ mol^(-1))` | |