Question

What best explains the observed trend in atomic radii going down the periodic table

Answer 1

As we move from top to bottom, the y-value which is the Atomic Radii of the element tends to increase.

Step-by-step explanation:

By adding more shells the atom gets bigger because the electrons get further away creating more space, distance from the nucleus increases.

Answer 2

going down the the periodic table, the number of shells increases resulting in an obvious increase in the atomic radii of the elements