A quantity of this type times q must be less than 1 for points on a Zimm plot, which is used to calculate the second virial coefficient, molecular mass, and this quantity. One quantity of this type multiplies 6 pi and viscosity in the denominator of the Stokes-Einstein relationship, which allows it to be calculated in dynamic light scattering. Apparently, values of the hydrodynamic form of this quantity may serve as an approximation of (*) volume in gel permeation chromatography. The root mean square volume of this quantity for a macromolecule is also called this value “of gyration.” A form of this quantity measured in angstroms is cubed in the formula for the van der Waals volume. For 10 points, name this quantity, the sum of which for two bonded atoms equals the bond length. ■END■
ANSWER: radius [accept radius of gyration or hydrodynamic radius or van der Waals radius or atomic radius]
<AW, Chemistry>
= Average correct buzz position