In the present article, we emphasize the correlation between orbital relaxation effect and nature of atomic Fukui functions. While doing so,f ((r) over bar) and f(+)((r) over bar) values are found to be positive and negative, respectively, for the chosen s block elements. Also, f(-) ((r) over bar) and f(+) (r) over bar values for chosen p block atoms are negative. Nodal nature of the highest occupied and lowest unoccupied orbitals, electron-electron repulsion and effective nuclear charge become handy in explaining the observed trends. Out of track results obtained for the inert atoms are also explained. (C) 2015 Elsevier B.V. All rights reserved.