As we move down in group 13 elements increase in atomic size is comparatively very less. Explain.

As we move down in group 13 elements increase in atomic size is compar

1.	As we move down in group 13 elements increase in atomic size is comparatively very less. Explain.
Answer» SOLUTION :It is due to the poor SHIELDING effect of d and f - electrons as a RESULT of which effect nuclear charge increases.