[填空题]
An oxygen molecule consists of two oxygen atoms whose total mass 8k8 sw ex/kcpo 7zeay7t-me)5 is6g8yjhnb;kryo+/ i f8 $5.3 \times10^{ -26}$ 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