Which of the following sequences contain atomic numbers of only representative elements ?

Options

A. 3,33,53,87
B. 2,10,22,36
C. 7,17,25,37,48
D. 9,35,51,88

Answer

A, D

Explanation

(a,d) Elements of s and p-block elements are called representative elements. Elements of d-block (Z=21-30, 39-48, 57 and 72-80, 89 and 104-112) are called transition elements while those of t-block (with Z=58-71 and Z=90-103) are called inner transition elements. With reference to this division, elements listed under option (a) and option (d) are all representative elements.