Why are d-block elements called transition elements?

What are d-block elements ?

What are f-block elements ?

Why f-block elements are called inner transition 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 ?

How d-block elements are classified?

Define the term transition element.

Why are group 1 elements called alkali metals?

Elements whose atoms have their s and p-sub-levels complete are the: Normal elements Transition elements Halogens Inert gases.

d-block elements form coloured ions because