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The atomic numbers of vanasium (V) Chorm...

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

A

Cr

B

Mn

C

Fe

D

V

Text Solution

Verified by Experts

The correct Answer is:
A
`underset(3d^(3) 4s^(2))(V)" " underset(3d^(5)4s^(1))(Cr)" "underset(3d^(5)4s^(2))(Mn)" " underset(3d^(6)4s^(2))(Fe)`
In case of Chrominum, the second electron will be removed from extra stable half filled configuration `Cr^(+) = 3d^(5) 4s^(0)`
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