An alpha particle collides elastically with a stationary nucleus and continues moving at an angle of 60∘ with respect to the original direction of motion. The nucleus recoils at an angle of 30∘ with respect to initial direction of motion of alpha particle. Mass number of the nucleus is:

An alpha particle collides elastically with a stationary nucleus and c

1.	An alpha particle collides elastically with a stationary nucleus and continues moving at an angle of 60∘ with respect to the original direction of motion. The nucleus recoils at an angle of 30∘ with respect to initial direction of motion of alpha particle. Mass number of the nucleus is:
Answer» An alpha particle collides elastically with a stationary nucleus and continues moving at an angle of $60^{\circ}$ with respect to the original direction of motion. The nucleus recoils at an angle of $30^{\circ}$ with respect to initial direction of motion of alpha particle. Mass number of the nucleus is:

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An alpha particle collides elastically with a stationary nucleus and continues moving at an angle of 60∘ with respect to the original direction of motion. The nucleus recoils at an angle of 30∘ with respect to initial direction of motion of alpha particle. Mass number of the nucleus is:

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