The first transition series metals are shown below.
-Which has the smallest atomic radius?
A)Sc
B)V
C)Ni
D)Zn

Question

The first transition series metals are shown below. 
-Which has the smallest atomic radius?
A)Sc 
B)V 
C)Ni 
D)Zn

Quizplus · Accepted Answer

Ni (Nickel) has the smallest atomic radius among the options given. This is because as you move across a period in the periodic table from left to right, the atomic number increases which means more protons are added to the nucleus, pulling the electrons closer and decreasing the atomic radius. Nickel is further to the right in the periodic table compared to Scandium (Sc), Vanadium (V), and Zinc (Zn), thus it has a smaller atomic radius.

The First Transition Series Metals Are Shown Below