Transition elements are d-block elements, with some exceptions. Usually they are paramagnetic. They show variable oxidation states. They and their compounds show catalytic property. Which is more paramagnetic: `Fe^(2+)or Fe^(3+)`. Why?

Explanation

The electronic configurations of `Fe^(2+)` and `Fe^(3+)` are given below: Since `Fe^(3+)` has more unpaired electrons, it is more paramagnetic.