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The atomic numbers of vanadium(V), chrom...

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

A

V

B

Cr

C

Mn

D

Fe

Text Solution

Verified by Experts

The correct Answer is:
B
The second ionization potential value of Cr is sufficiently higher than those of neighbouring elements. This is because of the E.C. of Crt which is `3d^5` (half filled):
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BRILLIANT PUBLICATION-THE D- AND F-BLOCK ELEMENT-LEVEL-II
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