Four successive members of the first row transition elements are listed below with their atomic number. Which one of them is expected to have the highest third ionisation enthalpy ?

Options

A. Vanadium (Z= 23)
B. Chromium (Z=24)
C. Manganese (Z = 25)
D. Iron (Z=26)

Answer

C

Explanation

Electronic configuration

Since `Mn^(2+)` has stable (exactly half -filled configurations), `IE_3` of Mn will be maximum.