Question

What is the difference between normal and transition elements?

Answer 1

Normal elements are s and p block elements and transition elements are those which come between them i.e. d block elements and f block elements are known as inner transition elements. They are like the gateway from s block to p block.

Answer 2

normal element we usually called main group elements , transition element have incomplete number of d - election ( 1-9)
normal elements are S and D block element and transition element are those which come between them that is d block element and f block element are know as inner transition element