Home
Class 11
CHEMISTRY
Consider the following nuclear reactions...

Consider the following nuclear reactions:
`""_(92)""^(238)Mto.""_(y)""^(x)N+2.""_(2)""^(4)He, ""_(x)""^(y)Nto ""_(B)""^(A)L+2beta""^(+)`
The number of neutrons in the element L is

A

142

B

146

C

140

D

144

Text Solution

Verified by Experts

The correct Answer is:
C
`""_(92)M^(238) to ""_(y)N^(x) + 2""_(2)He^(4)`
238=x+8
x=230
y+4=92
y+4=92
y=88
`""_(88)N^(230) to ""_(B)L^(A) + 2+underset("Positron")(""_(1)beta^(0))`
A=230
B+2 =88
B=88-2=86
`therefore ""_(B)L^(A)=""_(86)L^(228)`
No. of neutrons in L =230 -86 =134
Promotional Banner

Topper's Solved these Questions

  • NUCLEAR AND RADIO CHEMISTRY

    DINESH PUBLICATION|Exercise Selected Straight Objected Type MCQs|26 Videos

  • NUCLEAR AND RADIO CHEMISTRY

    DINESH PUBLICATION|Exercise Linked Comprehension Type MCQs|9 Videos

  • NUCLEAR AND RADIO CHEMISTRY

    DINESH PUBLICATION|Exercise Evaluate Yourself|45 Videos

  • NOMENCLATURE OF ORGANIC COMPOUNDS

    DINESH PUBLICATION|Exercise MCQs|13 Videos

  • ORGANIC CHEMISTRY - SOME BASIC PRINCIPLES & TECHNIOUES

    DINESH PUBLICATION|Exercise PURIFICATION & CHARACTERISATION OF ORGANIC COMPOUNDS|38 Videos

Similar Questions

Explore conceptually related problems

Consider the following nuclear reactions : ._(92)^(238)M to _(Y)^(X)N+2_(2)^(4)"He " ,_(Y)^(X)N to _(B)^(A)L+2beta^(+) The number of neutrons in the element L is :

Consider the follwing nuclear reactions: ._(92)^(238) M rarr ._(y)^(x)N + 2 ._(2)He^(4) ._(y)^(x)N rarr ._(B)^(A)L + 2beta^(+)

Unstable nuclei attain stability through disintegration. The nuclear stability is related to neutron proton ratio (n//p) . For stable nuclei n//p ratio lies close to unity for elements with low atmoic numbers (20 or less) but it is more than 1 for nuclei having higher atomic numbers. Nuclei having n//p ratio either very high or low undergo nuclear transformation. When n//p ratio is higher than required for stability, the nuclei have the tendency to emit beta -rays. while when n//p ratio is lower than required for stability, the nuclei either emits alpha -particles or a positron or capture K -electron. For reaction ._(92)M^(238) rarr ._(y)N^(x) + 2 ._(2)He^(4), ._(y)N^(x) rarr ._(B)L^(A) + 2 ._(-1)e^(0) The number of neutrons in the element L is

DINESH PUBLICATION-NUCLEAR AND RADIO CHEMISTRY-Revision Questions from Competitive Exams
  1. The radioactive isotope ""(27)^(60)Co which is used in the treatment o...

    Text Solution

    |

  2. A radioactive isotope decays at such a rate that after 192 minutes onl...

    Text Solution

    |

  3. An artifical radioactive isotope gave ""(7)^(14)N after two successive...

    Text Solution

    |

  4. If radium and chlorine combine to form radium chloride the compound is

    Text Solution

    |

  5. Consider the following nuclear reactions: ""(92)""^(238)Mto.""(y)""^...

    Text Solution

    |

  6. The half life of a radio isotope is four hours. If the initial mass of...

    Text Solution

    |

  7. A radioactive isotope has half life of 8 days . If today 125 mg is lef...

    Text Solution

    |

  8. Hydrogen bomb is based on the principle of

    Text Solution

    |

  9. A nuclide of an alkaine earth metal undergoes radioactive deacy by em...

    Text Solution

    |

  10. .(92)U^(238) emits 8 alpha- particles and 6 beta- particles. The n//p ...

    Text Solution

    |

  11. If a substance with hlaf life 3 days is taken at other place in 12 day...

    Text Solution

    |

  12. The half lives of two radioactive nuclides A and B are 1 and 2 min. re...

    Text Solution

    |

  13. Calculate the energy released in the following: .(1)H^(2) + .(1)H^(3...

    Text Solution

    |

  14. In successive emission of beta and alpha -particles, how many alpha an...

    Text Solution

    |

  15. What will be the binding energy of ""^(16)O , if the mass defect is 0....

    Text Solution

    |

  16. The compound used for the preparation of UF6 in the enrichment of .92 ...

    Text Solution

    |

  17. How many alpha and beta particles are emitted when uranium .(92)^(238)...

    Text Solution

    |

  18. Which emits beta-particles ?

    Text Solution

    |

  19. The neutron to proton ratio of the daughter element after a nucleides ...

    Text Solution

    |

  20. The nuclei .(6)C^(13) & .(7)N^(14) can be described as

    Text Solution

    |