Question

Which of the following element belongs to the first transition series of the periodic table?

(a) V

(b) Zr

(c) Ta

(d) Y

This question was addressed to me in an internship interview.

This intriguing question originated from Position of the Periodic Table topic in section D and F-Block Elements of Chemistry – Class 12

Answer 1

Right choice is (a) V

The best I can explain: The first transition series or 3d series corresponding to the filling of 3d sublevel consists of the following 10 elements of the 4^th period: Sc (Atomic No. = 21), Ti, V, Cr, Mn, Fe, Co, Ni, Cu and Zn (Atomic No. = 30).