The set that contains atomic numbers of only transition elements , is :

Options

A. 37, 42, 50, 64
B. 21, 25, 42, 72
C. 9, 17, 34, 38
D. 21, 32, 53, 64

Answer

B

Explanation

Elements with atomic number 21, 25, 42 and 72 belongs to transition metals.