The distance of closest approach of an Ξ±-particle fired towards a nucleus with momentum P is r. What β Atomic Structure Chemistry Question
Question
The distance of closest approach of an Ξ±-particle fired towards a nucleus with momentum P is r. What will be the distance of closest approach when the momentum of the Ξ±-particle is 2P?
Answer: D
π‘ Solution & Explanation
r β 1/KE = 1/(P^2/2m) β 1/P^2. Doubling momentum to 2P decreases r by a factor of 4, giving r/4.
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