[填空题]
An oxygen molecule consists of two oxygen atomsn(a brw9v(dcynk .w5kydv )4w3 u7vf) whose total maslqjgkb; m 8qq2g0 jxj ,nl/yosg29a)7s is $5.3 \times10^{ -26}$ kg and whose moment of inertia about an axis perpendicular to the line joining the two atoms, midway between them, is $ 1.9\times10^{-46 }$ $kg \cdot m^2$ From these data, estimate the effective distance between the atoms. $\times10^{-10 }$ m