Question

why zinc,cadmium,murcury do not regarded as transition metal?

Answer 1

Hey mate here is your answer



a transition element are those elementwhich have incompletely filled d orbitals in its ground state or any one of its oxidation states , zn , cd and hg have full d10 configuration in their ground state as well as their common oxidation state . ... that is why zn , cd and mercury are not regarded as transition metals .



I hope it helps you to get the right answer ❤

Answer 2

Zinc is not consider as a transition metal because its compounds or ions (Zn2+) contain a full filled d-orbital or sub shell and are unstable.Moreover it have only one ion which is the (Zn2+). Hence zinc do not form colored aqueous ions because it do not have at least one vacant d-orbital in which it can receive an electron in a reaction.

Considering Zinc not as a transition metal require you to understand and see into consideration the properties of transition metals . You can start with their ability to have variable oxidation state and their catalytic nature in reactions.

Here are some of the characteristic of a transition metal

They form compound with variable oxidation states

They are good catalyst in most reactions

They exhibit para-magnetism

They form complexes

They form colored ions with compound.