Name the lightest and the heaviest elements (in terms of density) among the transition elements.

Define the term transition element.

Name the first and last element in the second transition series.

Why are transition elements so named ?

Name the phloem elements .

What are the characteristics of the transition elements and why are they called transition elements? Which of the d-block elements may not be regarded as the transition elements ?

Name any two transition elements and any two inner transition elements.

Assign reasons for each of the following: (i) Transition metals generally form coloured compounds. (ii) Manganese exhibits the highest oxidation state of +7 among the 3d-series of transition elements.

Name any two characteristics of transition elements.

Why are d-block elements called transition elements?