Umumiy kimyo I bob. Atom tuzilishi va davriy qonun Atom tuzilishi. Elementar zarrachalar – proton, neytron, elektron

7. (107-19). Reaksiya tenglamasi ²⁵⁴Es + hv → X + 5α + 5β + 5n bo’yicha hosil bo’lgan yangi element izotopini toping.
A) ²⁴⁷Cm B) ²³⁴Am C) ²⁴⁴Pu D) ²²⁹Pu E) ²³⁴Np
8. (108-19). Elementlarning radiaktiv yemirilish jarayonida ikkitadan α, β va γ-zarrachalar chiqqanda, quyidagi sxemani yozish mumkin: shu jarayonda hosil bo’ladigan element uchun A’ va N’ qiymatlarini toping.
A) A’ = A – 3; N’ = N – 2 B) A’ = A – 8; N’ = N – 4
C) A’ = A – 8; N’ = N – 2 D) A’ = A – 2; N’ = N – 1
E) A’ = A – 4; N’ = N – 1
9. (109-19). Tenglamasi
²⁰⁹Bi + α → ²¹¹At + X bo’lgan reaksiyadagi noma’lum zarrachani aniqlang.
A) α-zarracha B) elektron C) neytron
D) pozitron E) proton
10. (110-19). Quyidagi ²⁶⁴Ns → X + 3α + 2_-β reaksiyada hosil bo’lgan yangi element izotopini aniqlang.
A) ²⁵²Md B) ²⁵⁵Lr C) ²⁵³Md D) ²⁵²Es E) ²⁵⁴No
11. (111-19). Yadro bomba portlash reaksiyasida qatnashgan boshlang’ich element yadrosini toping.
X → ²¹⁰Rb + 6α + 3_-β
A) ²³²Th B) ²³⁵U
C) ²³⁸U D) ²³³ThE) ²³⁴Pa
12. (112-19). Izotop E ga γ-zarrachalar ta’sirida ¹³⁸Xe, ⁹⁵Sr va 2 ta neytron hosil bo’ldi. E izotopni aniqlang.
A) ²³⁸U B) ²³⁷Np C) ²⁰⁷Pb D) ²³⁵U E) ²³¹Pa
13. (113-19). ²⁰⁹Bi (α; 2n) X yadro reaksiyasida X-izotopni ko’rsating.
A) ²¹⁰Po B) ²¹¹Po C) ²⁰⁹Bi D) ²¹¹At E) ²¹⁰At
14. (114-19). Quyidagi
²¹¹At + 7¹n + ¹H → X + 2α yadro reaksiyasi natijasida 0,79 mg astat yadrosi bombardimon qilinganda necha sm³ geliy va qanday element izotopi hosil bo’ladi?
1) ²¹⁰Bi 2) 1,68 3) ²¹¹Pb 4) ²¹⁰Pb 5) 0,168 6) 1685
A) 6, 3 B) 3, 5 C) 2, 3 D) 5, 4 E) 5, 3