1. Tardigrade
  2. Question
  3. Chemistry
  4. The atomic numbers of vanadium (V) , chromium (Cr) , manganese (Mn) and iron (Fe) are respectively 23, 24, 25 and 26 . Which one of these may be expected to have the highest second ionisation enthalpy?

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Q. The atomic numbers of vanadium $ (V) $ , chromium $ (Cr) $ , manganese $ (Mn) $ and iron $ (Fe) $ are respectively $ 23,\,\,24,\,\,25 $ and $ 26 $ . Which one of these may be expected to have the highest second ionisation enthalpy?

Rajasthan PMTRajasthan PMT 2008

Solution:

This is stable $ EC $ , hence formation of $ C{{r}^{2+}} $ by second $ IP $ requires maximum enthalpy.

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