Home
Class 12
PHYSICS
Assertion: Electron capture occurs more ...

Assertion: Electron capture occurs more often than positron emission in heavy elements.
Reason: Heavy elements exibits radioactivity.

A

Assertion and Reason are true and Reason is the correct explanation of Assertion

B

Assertion and Reason are true and Reason is not the correct explanation of Assertion

C

Assertion is true , Reason is false

D

Assertion is false , Reason is true .

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • NUCLEI

    AAKASH SERIES|Exercise Exercise-II|40 Videos

  • NUCLEI

    AAKASH SERIES|Exercise Practice Exercise|40 Videos

  • NUCLEI

    AAKASH SERIES|Exercise Practice Exercise|40 Videos

  • NUCLEAR PHYSICS

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE PRACTICE SHEET (ADVANCED) Integer Type Questions|4 Videos

  • OPTICAL INSTRUMENTS

    AAKASH SERIES|Exercise PRACTICE SHEET (EXERCISE -I) (OPTICAL INSTRUMENTS) (LEVEL-I (MAIN)) (SUBJECTIVE OBJECTIVE TYPE QUESTIONS)|21 Videos

Similar Questions

Explore conceptually related problems

The f-block consists of the two series lanthanoids and actinoids. Because Lanthanum closely resembles the Lanthanoids. The Lanthanoid resemble one another more closely than do the members ofordinary transition elements in any series. They have only one stable oxidation state. The chemistry of the actinoids is on the other hand, much more complicated. The complication arises partly owing to the occurance ofa wide range of oxidation states in these elements and partly because their radioactivity creates special problems in their study Wrong statement of the following is

Why the second lonization energy is more than the first ionization energy for any element ?

Assertion (A) : Heavy water is used as moderator in nuclear reactors. Reason (R) : Heavy water undergoes exchange reaction.

There are more number of atoms in one gram atom of an element than in one gram of the same element. Explain.

Assertion (A) : Heavy rain can cause flooding Reason (R) : Rainfall directly depends on temperature.

Which of the above element shows more electron affinity value ?

Assertion: Energy is released when heavy nuclei E undergo fission or light nuclei undergo fusion. Reason: For heavy nuclei, binding energy per nucleon increases with increasing Z while for light nuclei it decrease with increasing Z.

AAKASH SERIES-NUCLEI-Exercise-I
  1. If a radioactive nucleus decay according to the following reaction ....

    Text Solution

    |

  2. Which of the following particles is most unstable?

    Text Solution

    |

  3. Which of the following are their own antiparticle?

    Text Solution

    |

  4. The products of the fission of U^235 by thermal neutron are

    Text Solution

    |

  5. As the age of star increases

    Text Solution

    |

  6. A particle having no charge and almost no rest mass

    Text Solution

    |

  7. In the nuclear reaction .6C^11 to B5^11 + beta^(+) + X what does X s...

    Text Solution

    |

  8. Two identical nuclei A and B of the same radioactive element undergo b...

    Text Solution

    |

  9. During (beta^-) decay (beta minus), the emission of antinenutrino par...

    Text Solution

    |

  10. A nuclide A undergoes alpha - decay and another nuclide B undergoes be...

    Text Solution

    |

  11. In the fission of U^235 (i) Slow neutron is absorbed by U^235 (ii)...

    Text Solution

    |

  12. Which of the following statements are correct (i) Positron is predic...

    Text Solution

    |

  13. Consider the following two statements A and B and identify the correct...

    Text Solution

    |

  14. Consider the following statements. A, B and identify the correct choic...

    Text Solution

    |

  15. Consider the following statements (A) and (B) and identify the correct...

    Text Solution

    |

  16. Assertion: Free Neutron decays into proton, electron and antineutrino ...

    Text Solution

    |

  17. Assertion : Nuclear forces arise from strong coulombic interactions be...

    Text Solution

    |

  18. Assertion: Energy is released when heavy nuclei E undergo fission or l...

    Text Solution

    |

  19. Assertion: Electron capture occurs more often than positron emission i...

    Text Solution

    |

  20. Match list-I with list-II

    Text Solution

    |