Pick out the incorrect statement for transition metals,

Options

A. They from alloys
B. transition metals do not exhibit variable oxidation states
C. transition metal ions are colloured
D. transition metals and majority of their compounds are paramagnetic.

Answer

B

Explanation

a) Transition metals exhibit variable oxidation states, because the energies of `( n-1)` d and nsorbitals have comparable values, due to which `(n-1)` d-orbital electrons alos participate in bond formation with ns electrons.
a) `Cu^(+)` is not a transition metal ion, because it has fully-filled d-orbitals.
c) Transition metal ion are coloured, because of d-d transitions of electron by the absorption of radiations of electron by the absorption of radiation of visible range. Therefore, the trsnmitted is possible, if d-orbitals are incompletely filled.
d) Trnsition metals and majority of their compound are paramagnetic, because they have unpaired electrons in the `(n-1)` d-orbitals. have unpaired electrons in the `(n-1)` d-orbitals.