In a Geiger-Marsden experiment, what is the distance of closest approach to the nucleus of a 7.7 MeV `alpha`-particle before it comes momentarily to rest and reverses its direction?

In a Geiger-Marsden experiment, what is the distance of closest approach to the nucleus of a 7.7 MeV a-particle before it comes momentarily to rest and reverses its direction?

In a Geiger-Marsden experiment, what is the distance of closest approach to the nucleus of a 7.7 MeV a-particle before it comes momentarily to rest and reverses its direction?

In a geiger - marsden experiment. Find the distance of closest approach to the nucleus of a 7.7 me v alpha - particle before it comes momentarily to rest and reverses its direction. (z for gold nucleus = 79) .

In a geiger - marsden experiment. Find the distance of closest approach to the nucleus of a 7.7 me v alpha - particle before it comes momentarily to rest and reverses its direction. (z for gold nucleus = 79) .

In the Geiger-Marsden scattering experiment find the distance of closest approach to the nuclcus of a 7.7 Mev alpha -particle before it comes momentaily to rest and reverses its direction. (Z for gold nucleus = 79 )

In the original experiment, Geiger and Marsden calculated the distance of closest approach to the gold nucleus (Z=79)- of a 7.7MeV alpha particle before it comes momentarily to rest and reverses its direction. What is its value?