-Which of the elements indicated on the above periodic table is the group 5A element with the smallest atomic radius?
A)element A
B)element B
C)element C
D)element D

Question

-Which of the elements indicated on the above periodic table is the group 5A element with the smallest atomic radius?
A)element A 
B)element B 
C)element C 
D)element D

Quizplus · Accepted Answer

In the periodic table, atomic radius decreases as you move from left to right across a period due to the increase in nuclear charge which pulls the electrons closer to the nucleus. Since all the elements in Group 5A (15) are in the same group but different periods, the one with the smallest atomic radius would be the element at the top of the group, which is element A.

-Which of the Elements Indicated on the Above Periodic Table