Question

URGENT va rog
exercitiu
3.44

Answer 1

[tex]a)^{238}_{92}U=^{206}_{82}Pb+x* \alpha +y* \beta \\ ^{238}_{92}U= ^{206}_{82}Pb+x*^{4}_{2} \alpha +y* _{-1}\beta \\ Sus:\\ 238=206+4*x\\ 32=4*x\\ x=8\\ Jos:\\ 92=82+8*2-y\\ 10=16-y\\ y=6\\ Raspuns: \alpha -8; \beta -6.\\ [/tex]

[tex]b)^{232}_{90}Th=^{208}_{82}Pb+x*^{4}_{2} \alpha +y*_{-1} \beta \\ Sus:\\ 232=208+4*x\\ 24=4*x\\ x=6\\ Jos:\\ 90=82+6*2-y\\ 8=12-y\\ y=4\\ Raspuns: \alpha -6; \beta -4.\\[/tex]

[tex]c)^{235}_{89}Ac=^{207}_{82}Pb+x*^{4}_{2} \alpha +y*_{-1} \beta \\ Sus:\\ 235=207+4*x\\ 28=4*x\\ x=7\\ Jos:\\ 89=82+7*2-y\\ 7=14-y\\ y=7\\ Raspuns: \alpha -7; \beta -7.[/tex]

[tex]d)^{237}_{93}Np=^{209}_{83}Bi+x*^{4}_{2} \alpha +y_{-1} \beta \\ Sus:\\ 237=209+4*x\\ 28=4*x\\ x=7\\ Jos:\\ 93=83+7*2-y\\ 10=14-y\\ y=4\\ Raspuns: \alpha -7; \beta -4. [/tex]