P α Q1.The diagram the path of an particle deflected by the nucleus of an atom. Point on the path α is the point of closest approach of the particle to the nucleus. α Which of the following statements about the particle on this path is correct? P. A Its acceleration is zero at P. B Its kinetic energy is greatest at P. C Its potential energy is at P. D Its speed is least at (Total 1 mark) Q2.The actinium series of radioactive decays starts with an isotope of uranium, nucleon (mass) number 235, proton (atomic) number 92. Which line in the table shows the nucleon number and proton number of the isotope after α β– the emission of 5 particles and 2 particles? Nucleon number proton number A 213 82 B 215 80 C 215 84 D 227 87 (Total 1 mark)
Q1.The diagram the path of an α particle deflected by the nucleus of an atom. Point P on the path is the point of closest approach of the α particle to the nucleus. Which of the following statements about the α particle on this path is correct? A Its acceleration is zero at P. B Its kinetic energy is greatest at P. C Its potential energy is at P. D Its speed is least at P. (Total 1 mark) Q2.The actinium series of radioactive decays starts with an isotope of uranium, nucleon (mass) number 235, proton (atomic) number 92. Which line in the table shows the nucleon number and proton number of the isotope after the emission of 5 α particles and 2 β– particles? Nucleon number proton number A 213 82 B 215 80 C 215 84 D 227 87 (Total 1 mark)
BA84B3936F8867C4AA70879B0C4F7AFF.docx