! atomic radii modified to more closely resemble rashin HYDREN radii. ! hydrogen give radius of 1.17, since all hydrogens in united set polar. atom__res_radius_ ca 2.46 cb 2.78 cg 2.78 cd 2.78 ce 2.78 cz 2.78 ch 2.78 c 2.46 c sp1 2.46 c sph 2.78 c bht 2.78 c cb3 2.78 a 1.75 o 1.88 og 1.50 oh 1.50 n 2.17 h 1.16 p 1.97 s 1.97 mg 1.86 m5 1.90 ca 1.86 cu 1.25 zn 1.34 fe 1.30 lp1 0.00 lp2 0.00