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

7. O’zgarishlar ketma-ketligidagi “X₁” va “X₂” zarrachalarni toping.
⁶¹Ni + ¹H → X₁ → X₂ + ¹n
A) ⁶³Cu-⁶⁴Cu B) ⁶²Cu-⁶³Cu C) ⁶²Cu-⁶¹Cu
D) ⁶¹Cu-⁶⁴Cu E) ⁶²Cu-⁶²Cu
Yadro reaksiyasi. (Variant)
1. (101-20). ²⁴²Pu → ²³⁰Th + xα + y_– β
Ushbu yadro reaksiyasi natijasida 18,4 mg toriy hosil bo’lsa, qancha elektron ajralib chiqqan?
A) 1,2∙10²⁰ B) 3,01∙10²¹ C) 9,63∙10¹⁹ D) 9,16∙10²⁰
2. (102-20).
²³²Pu → xα + y₊β + ²¹⁶Bi + 2hv
Ushbu yadro reaksiyasida 23,2 mg plutoniy yemiril-gan bo’lsa, necha dona pozitron ( ₊β ) hosil bo’lgan?
A) 18,06 ·10¹⁹ B) 26,53 ·10¹⁹ C) 10,53 ·10²⁰ D) 18,06 ·10²⁰
3. (103-20). Quyidagi yadro reaksiyasida 9,44 mg uran reakslyaga qatnashib 12.04 ∙10¹⁹ ta neytron ajralsa, hosil bo’lgan izotopni ko’rsating. ²³⁶U + ¹⁷O → A + x ¹n + 7hv
A) eynshteyniy-249 B) fermiy-248
C) berkliy-248 D) fermiy-257
4. (104-20).
Md + 2α → ²⁵⁷Lr + x₊β + y ¹n
Ushbu yadro reaksiyasi asosida 10,28 mg lourensiy va
16,85 ·10¹⁹ dona neytron hosil bo’ldi. Mendeleyeviy izotopining nisbiy atom massasini aniqlang.
A) 257 B) 256 C) 258 D) 254
5. (105-20).
²³⁸U → xα + y_–β + ²¹⁸Rn + 10hv
Ushbu yadro reaksiyasida 952 mg uran yemirilgan bo’lsa, necha dona elektron hosil bo’ladi?
A) 45,43 ∙10¹⁸ B) 36,12 ∙10²⁰ C) 10,53 ∙10²² D) 96,32 ∙10²⁰
6. (106-20).
²⁵³Es + 2α → x ¹n + y₊β + ²⁵⁶Md
Ushbu yadro reaksiyasi asosida 10,12 mg eynshteyniy parchalanganda necha dona neytron hosil bo’ladi?
A) 34,45·10²⁰ B) 12,04·10¹⁹ C) 8,53·10¹⁸ D) 13,28·10²¹
7. (107-20). ²⁵⁶Es → Cm + xα + y_-β + 9hv
Ushbu yadro reaksiyasi asosida 12,54 mg eynshteyniy izotopi parchalanganda 14,86 ·10¹⁹ dona elektron ajralsa, reaksiya natija-sida olingan kyuriy izotopining nisbiy atom massasini ko’rsating.
A) 235 B) 237 C) 240 D) 234
8. (108-20). Quyida berilgan yadro reaksiyasi asosida 54,8 mg uran izotopi parchalanishida 11,09·10²⁰ dona neytron ajralgan bo’lsa, hosil bo’lgan aktiniy izotopining nisbiy atom massasini aniqlang. ²³⁸U → Ac + x¹n + y₊β
A) 230 B) 235 C) 232 D) 234
9. (109-20). ²²³Fr → ²⁰³Tl + xα + y_-β
Ushbu yadro reaksiyasida 4,47·10¹⁹ dona electron hosil bo’lsa, reaksiyada parchalangan fransiy miqdorini (mg) hisoblang.
A) 4,14 B) 5,6 C) 6,34 D) 3,9


10. (110-20). ²²³Fr → ²⁰³Tl + xα + y_-β
Ushbu yadro reaksiyasida x va y qiymatlarini ko’rsating.
A) 5; 4 B) 7; 4 C) 8; 3 D) 6; 3
11. (111-20). 84 mg protaktiniy parchalanganda
²³⁴Pa → Pb + xα + y_-β 64,83 ·10¹⁹ dona elektron hosil bo’lsa, reaksiya natijasida olingan qo’rg’oshin izotopining nisbiy atom massasini toping.
A) 212 B) 210 C) 211 D) 209
12. (112-20).
²⁰³Po + 5α → x ₊β + y ¹H + ²¹⁵Bi
Ushbu yadro reaksiyasi asosida 84,28 ·10¹⁹ dona pozitron ajralgan bo’lsa, reaksiyada qatnashgan poloniy izotopining miqdorini (mg) toping.
A) 102,8 B) 94,7 C) 83,6 D) 75,2
13. (113-20). Plutoniy-243 o’zidan 5α, 4_– β, 3n va X izotop hosil qilib parchalansa, yangi izotopdagi neytronlar sonini ko’rsating.
A) 132 B) 134 C) 135 D) 130
14. (114-20).
²⁴⁰Am + ¹⁹Ne → A + x¹n + 8hv
12 mg ameritsiy reaksiyaga kirishib 15,05·10¹⁹ dona neytron ajralgan bo’lsa, hosil bo’lgan izotopni aniqlang.
A) nilsboriy-254 B) lourensiy-250
C) nilsboriy-260
D) kurchatoviy-261