[填空题]
An oxygen molecule consists of two nrjf( .v)uf q3r y;h5moxygen atoms whose to,h 9qq 1zotn)pbv .k:+vrg0uptal mass 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