Question

How does the shielding phenomenon affect the relative atomic sizes of elements in the same group?

A. An increase in the degree of shielding causes a decrease in atomic size.

B. An increase in the degree of shielding causes an increase in atomic size.

C. Shielding has no effect on relative atomic size within a group.

D. Shielding does not have an affect on the sizes of atoms.

Answer 1

Please anybody help!

Answer 2

This place is so deserted. An atom has (proton + neutron) in the middle, this is its nucleus, then there are circle around it. It has one, two, three circles...etc, depending the name of the atom. Every circle there exist electron. And shielding occurs when the electron of circle one blocks the attraction of the electron in circle two from the proton in the nucleus. So the farther the electron from the nucleus, aka electron in circle 5, the more it is being "shielded" than say electron in circle 2. So the answer is B.Because the bigger the atom, the more circle because the atom is wider.

Answer 3

Thank you so much!