Inner transition elements are called actinides. This includes elements Actinium to Lawrencium. Their general electronic configuration may be represented as:
(n – 2) f1–14 (n – 1) d0 – 1ns2
In what way are the observed oxidation states of the lanthanides related to their electronic configurations?
Assign reasons for the following:
The enthalpies of atomisation of transition metals are high.
Describe the general characteristics of the transition elements with special reference to their tendency to:
(i) Exhibit paramagnetism.
(ii) Form complex compounds.
(iii) Their catalytic behaviour.
How is the variability in the oxidation states of transition metals different from that of the nontransition metals? Illustrate with examples.
