Question

Which of the following factors are responsible for the formation of the complex compounds?

• A. Smaller size of metal ions
• B. High ionic charges on metal
• C. Availability of $d$-orbital for bond formation
• D. Availability of both $d$-and $f$-orbitals for bond formation

Answer 1

Answer: (A), (B), (C)

Transition metals form a large number of complex compounds due to the comparitively smaller sizes of metal ions, their high ionic charges and availability of $d$-orbitals for bond formation availability of $f$-orbital has no role in complex formation.