First transitional series is present in

The first inner transition series is present in

Which element of first transition series has highest second ionization enthalpy ?

In the first transition series of elements, which element shows highest oxidation state?

In the first transition series of elements, which element shows highest oxidation state?

What is the common oxidation state of first transition series of elements ?

The paramagnetic character of first transition series increases upto manganese and then decreases. Explain .