Question

why transition metals have a tendency to form complex compounds?

Answer 1

Transition elements have tendency to form complexes more than s and p block elements, which form only a few complexes.

The reason is :-

They have small , highly charged ions.

They have vacant low energy orbitals to accept lone pairs of electrons donated by other groups or ligand .

So they are able to form complexes with the groups which are able to donate an electron pair . These groups are known as ligands.

Answer 2

Answer:

The reason transition elements form complexes because they contain vacant d-orbitals ,so that they can accommodate electrons of other elements and form bonds. Transition elements have variable oxidation state like from +2 to +6 which, shows its capacity to form bonds.