Question

Are the names given to the vertical columns and horizontal rows in the modern periodic table. How does the metallic character of elements vary on moving down a vertical column? How does the size of atomic radius vary on moving left to right in a horizontal row? Give reason in support of your answer in the above two cases.

Answer 1

Answer:

1. The metallic character increases from moving down a vertical column(group)
2. The atomic radius decreases from moving left to right in a horizontal row(period)

Explanation:

• the metallic character increases because as we go down in a vertical column the atomic radius increases which makes it easy for atom to loose electrons as the distance between the nucleus and the electron increases
• the atomic radius decreases from moving left to right because the outer shell electrons are in the same valence shell and the effective nuclear charge increases which results in more attraction of electron and nucleus ,pulling them strongly to nucleus

Answer 2

Answer:

The metallic character increases from moving down a vertical column(group) The atomic radius decreases from moving left to right in a horizontal row(period)