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The first ionisation energies of the ele...

The first ionisation energies of the elements of the first transition series (Ti to Cu)

A

Increases as the atomic number increases

B

Decreases as the atomic number increases

C

Do not show any change as the addition of electrons takes place in the inner `(n-i)` d-orbitals.

D

Increases from Ti to Mn and then decreases from Mn to Cu.

Text Solution

Verified by Experts

The correct Answer is:
a
`IE_1` of 3d-series increases with increase in atomic number due (i) increase in cuclear charge and (ii) decrease in atomic size.
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