What is the relation between the atomic size and electronegativity of an element?the relation between them according to their atomic size (from...

Electro negativity is the tendency of elements to attract
electrons. They form negative the negative ions when the combine with other elements.
Like NaCl has a Na+ and a Cl- ion.

As we move down along a
column in the periodic table the electro negativity decreases. This implies that as the
size of the atom increases the electro negativity decreases. It can be attributed to the
fact that the positive charge in the nucleus is shielded by more
electrons.

As we move from the left to the right across a
row the electro negativity increases. So elements like fluorine, chlorine, etc which lie
at the extreme right, just before the noble gases are the most
electronegative.

Fluorine is the most electronegative
element.