The ions of `d-`block elements are mostly paramagnetic-

Options

A. Because their `d-`orbitals are complete
B. Because they have mostly paired electrons
C. Because they have mostly unpaired electrons
D. Because they form coloured ions.

Answer

C

Explanation

All atomic and molecular specie4s which contains one or more unpaired electrons are paramagnetic. Most of the ions of transition elements have unpaired electrons. Hence they are all paramagnetic. Some ions of `d-`block elements with no unpaired e,ectrpms are `Sc^(+3),Ti^(+4),Zn^(+2)` and `Cu^(+1)`. These ions are not paramagnetic and they are also without colour.