Question

3 transition series belong to which period of the
periodic table?
a. 3
b. 4 c. 5 d.6

Answer 1

Answer:

vjavgixegeixeqvslux

Answer 2

Explanation:

They occupy the middle portions of the long periods of the periodic table of elements between the groups on the left-hand side and the groups on the right. Specifically, they form Groups 3 (IIIb) through 12 (IIb).