[填空题]
An oxygen molecule consists of two oxdzpw by+a4,b +ygen atoms whose total masf* 2b/xc 5yxwsweuw t m.*i82ns 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