why the atomic size decreases in a period as we move from left to right
Answers
Explanation:
the atomic size decrease as we move from left to right in a period because the atomic radius of the atom decreases.Tge atomic radius is the distance between the centre of the nucleus and the valence shell. As we know the no. of shells in a period is same ,but the valence electrons go on increasing by one. Due to this the force of attraction between the nucleus and the outer shells go one increasing and they come nearer . So the atomic radius decreases and as a result the atomic size also decreases. This is also the reason for the non metals to appear on the right side of the periodic table and the metals to appear on the left side. The metals tend to lose their electons due to small force of attraction while the non metals tend to accept electrons due to high force of attraction.