NCERT Exercise 12.2 - Atoms
Question: Suppose you are given a chance to repeat the alpha-particle scattering experiment using a thin sheet of solid hydrogen in place of the gold foil. (Hydrogen is a solid at temperatures below 14 K.) What results do you expect?
Answer: **NCERT answer:** The nucleus of a hydrogen atom is a proton. The mass of it is 1.67 × 10–27 kg, whereas the mass of an incident a-particle is 6.64 × 10–27 kg. Because the scattering particle is mo...
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