Question

Why atomic radius is irregular down the group?

Answer 1

Answer:

As a result, the atomic radius decreases. ... Atomic radius decreases from left to right within a period. This is caused by the increase in the number of protons and electrons across a period. One proton has a greater effect than one electron; thus, electrons are pulled towards the nucleus, resulting in a smaller....

Answer 2

Explanation:

The atomic radius of atoms generally increases from top to bottom within a group. As the atomic number increases down a group, there is again an increase in the positive nuclear charge. ... As the atomic number increases within a period, the atomic radius decreases.