我们基于电子密度和电子密度的拉普拉斯建立了元素周期表中各元素的原子半径，开发了SCRF-RADII程序，此程序目前可以构成Gaussian和ORCA的输入文件，用于实际计算，具体可参见：

(1) D.-C. Fang, SCRF-RADII, Beijing Normal University, Beijing, China, 2012。

(2) J.-Y. Tao, W.-H. Mu, G. A. Chass, T.-H. Tang and D.-C. Fang, Balancing the Atomic Waistline: Isodensity-Based SCRF Radii for Main-Group Elements and Transition Metals, Int. J. Quantum Chem., 2013, 113, 975– 984.

Based on electron density and its laplacian, we have obtained the atomic radii in periodic table of the elements, and a SCRF-RADII program is written in Fortran to form the input file of GAUSSIAN or ORCA. One can consult: 

(1) D.-C. Fang, SCRF-RADII, Beijing Normal University, Beijing, China, 2012。

(2) J.-Y. Tao, W.-H. Mu, G. A. Chass, T.-H. Tang and D.-C. Fang, Balancing the Atomic Waistline: Isodensity-Based SCRF Radii for Main-Group Elements and Transition Metals, Int. J. Quantum Chem., 2013, 113, 975– 984.