The atomic numbers of vandium (V). Chrom...

The atomic numbers of vandium `(V)`. Chromium `(Cr)`, manganese `(Mn)` and iron (Fe) respectively 23, 24,25 and 26. Which one of these may be expected to have the higher second ionization enthalpy ?

A

Cr

B

Mn

C

Fe

D

V

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A

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