Home Chemistry D and F - Block Elements General The first ionisation energies of the element…
Chemistry D and F - Block Elements General Single Correct MCQ
Published on: August 14, 2026

The first ionisation energies of the elements of the first transition series :

A
generally increases as the atomic numbers increase.
B
decrease as the atomic number increase.
C
do not show any change as the addition of electrons takes place in the inner (n – 1) d–orbitals.
D
increase from Ti to Mn and then decrease from Mn to Cu.

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Verified by Experts
The correct answer is:
A

First ionisation energies of 3d-series (first transition series) increase with increase in atomic number due to increase in nuclear charge decrease in atomic size.

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