Which of the following metals is capable of forming complexes spanning the smallest range of oxidation numbers?
A) Cu
B) Sc
C) Fe
D) Mn
E) Ni

Question

Quizplus · Accepted Answer

Scandium (Sc) is a transition metal that has a relatively low number of oxidation states due to its small atomic size, strong nuclear charge, and low electron affinity. It typically forms complexes with an oxidation state of +3, which is the most stable and widely observed state for Scandium complexes. In contrast, metals such as Iron, Copper, and Manganese can form complexes with a wide range of oxidation states, making them more versatile and biologically relevant. Therefore, Scandium has the smallest range of oxidation numbers, and B is the best choice.

Which of the Following Metals Is Capable of Forming Complexes