Question

Gallium is more electronegative than aluminium even though electronegativity of the elements decreases down the group. It is due to
(a) increase in the atomic size
(b) increase in the ionization energy
(c) increase of effective nuclear charge
(d) all the above
give a detailed explanation ,why?​

Answer 1

Answer:

Gallium is more electronegative than aluminium even though electronegativity of the elements decreases down the group. It is due to Increase of effective nuclear charge.