Since for nearly filled shells the tendency is to accept making it electronegative
While the ones with sparsely filled have the tendency to lose electrons making them less electronegative
atoms with nearly filled shells of electrons have greater electronegativity
than those with sparsely occupied shells .. why ?????????
Atoms with nearly filled shells can attain a stable electronic configuration
when they gain an electron . So they are more electronegative.
Since for nearly filled shells the tendency is to accept making it electronegative
While the ones with sparsely filled have the tendency to lose electrons making them less electronegative