Question

(17) Enriched uranium has more a- energy c- deuterium b- radioactivity d- uranium-235 (18) When an element X emits gamma-rays, its atomic number Z a- increases by 1 b- decreases by 2 c-increases by 2 d- remains the same (19) The actinium series ends at stable b- 207 Pb d- 209 Bi a- 206 Pb 208 Pb (20) The separation energy of an alpha particle from 8Gd, where M 8 Gd) = 157.92411 u, M654 Sm) = 153.92167 u and M(He) = 4.002603 u, is a-0.511 MeV b- 17.35 MeV C--2 MeV d- 0.152 MeV

Answer 1

17 option (d) is corect d- 439nium 235 Because 235 the enstiched 4379 nium is a type of usianium in which the percent composition of uranium has increased through process of isotope separation. Enriched Utanium is a critical component fou both civil mercliquer power generation and military nucleque Wabong 18. option (d) is couturuct d- remains the same four Gamma emission Because A o v Relaxation X + 0 A X Z Z