[en] Clustering in nuclei is an one of important subjects for understanding of light nuclear structure α-particle and heavy cluster decays of nucleus ground states and cluster transfer and emission reactions. Many authors have been considering for long time the clustering effect in nuclei using different approaches to this problem. Results of such studies are varied in the wide range depending on theoretical models used in the consideration. In this work we suggest an unified view-point of the alpha-clustering problem for fast and slow neutron induced (n,α) reactions and ground-state α-dacay of nuclei, namely, the statistical model is utilized. The α-clustering factors obtained in this work are compared with other ones estimated from different assumptions.