The atomic numbers of vanadium chromium manganese and iron are respectively 23, 24,25, and 26 which one
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.The electronic configurations are as follows;
V:(Ar)3d34s2V:(Ar)3d34s2
Cr:(Ar)3d54s1Cr:(Ar)3d54s1
Mn:(Ar)3d54s2Mn:(Ar)3d54s2
Fe:(Ar)3d64s2Fe:(Ar)3d64s2
The second ionization of CrCr means removal of electron from the stable configuration of 3d53d5.
The highest second ionization enthalpy is CrCr
Hence b is the correct answer.
V:(Ar)3d34s2V:(Ar)3d34s2
Cr:(Ar)3d54s1Cr:(Ar)3d54s1
Mn:(Ar)3d54s2Mn:(Ar)3d54s2
Fe:(Ar)3d64s2Fe:(Ar)3d64s2
The second ionization of CrCr means removal of electron from the stable configuration of 3d53d5.
The highest second ionization enthalpy is CrCr
Hence b is the correct answer.
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