$\alpha - $ particles of energy $400\, KeV$ are bombarded on nucleus of $_{82}Pb$. In scattering of $\alpha - $ particles, its minimum distance from nucleus will be
- A$0.59 \,nm$
- B$0.59\,\mathring A$
- C$5.9 \,pm$
- D$0.59\, pm$
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