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f- Block Elements

Four successi...

Question

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

A

Vanadium (Z = 23)

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B

Chromium (Z = 24)

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C

Manganese (Z = 25)

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D

Iron (Z = 26)

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Solution

The correct option is C Manganese (Z = 25)
Manganese (Z = 25) will have highest third ionization enthalpy as after second ionization they get stable half filled configuration( $d^{5}$ ).

Option C is correct.

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