d and f-Block ElementsEasy
Question
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 ionization enthalpy ?
Options
A.Cr
B.Mn
C.Fe
D.V
Solution
Electronic configuration of Cr is

So due to half filled orbital I.P. is high of Cr.

So due to half filled orbital I.P. is high of Cr.
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