Home
Class 12
PHYSICS
The nucleus .^(23)Ne deacays by beta-em...

The nucleus `.^(23)Ne` deacays by `beta`-emission into the nucleus `.^(23)Na`. Write down the `beta`-decay equation and determine the maximum kinetic energy of the electrons emitted. Given,`(m(._(11)^(23)Ne) =22.994466 am u` and `m (._(11)^(23)Na =22.989770 am u`. Ignore the mass of antineuttino `(bar(v))`.

Text Solution

Verified by Experts

`""_(10)^(23)Ne to ""_(11)^(23)Na + e^(-) + bar(v) + Q , Q = [m_N (""_(10)^(23)Ne) - m_N (""_(11)^(23)Na) - m_(e)] c^2`, where the masses used are masses of nuclei and not of atoms as in Exercise . Using atomic masses `Q = [m (""_(10)^(23)Ne) - m(""_(11)^(23)Na)]c^2`. Note `m_e` has been cancelled. Using given masses, `Q = 4.37 MeV`. As in Exercise , maximum kinetic energy of the electron (max `E_e) = Q = 4.37 MeV`.
Promotional Banner

Topper's Solved these Questions

  • NUCLEI

    NCERT TAMIL|Exercise ADDITIONAL EXERCISES|9 Videos
  • NUCLEI

    NCERT TAMIL|Exercise ADDITIONAL EXERCISES|9 Videos
  • MOVING CHARGES AND MAGNETISM

    NCERT TAMIL|Exercise ADDITIONAL EXERCISES|17 Videos
  • OPTICS

    NCERT TAMIL|Exercise EVALUATION (Numerical Problems)|10 Videos

Similar Questions

Explore conceptually related problems

The nucleus ""_(10)^(23)Ne decays by beta^(-) emission. Write down the beta -decay equation and determine the maximum kinetic energy of the electrons emitted. Given that : m (""_(10)^(23) Ne) = 22.994466 u m (""_(11)^(23)Na) = 22.989770 u .

The radionuclide ""^(11)C decays according to ""_(6)^(11)C to ""_(5)^(11)B + e^(+) + upsilon, T_(1//2) = 20.3 min The maximum energy of the emitted positron is 0.960 MeV. Given the mass values: m(""_6^11C) = 11.011434 u and m(""_6^11B) = 11.009305u . Calculate Q and compare it with the maximum energy of the positron emitted.

Consider the beta decay ^198 Au rarr ^198 Hg ** + Beta^(-1) + vec v . where ^198 Hg^** represents a mercury nucleus in an excited state at energy 1.088 MeV above the ground state. What can be the maximum kinetic energy of the electron emitted? The atomic mass of ^198 Au is 197.968233 u and that of ^198 Hg is 197.966760 u .

Let A be an mxxn matrix. If there exists a matrix L of type nxxm such that LA=I_(n) , then L is called left inverse of A. Similarly, if there exists a matrix R of type nxxm such that AR=I_(m) , then R is called right inverse of A. For example, to find right inverse of matrix A=[(1,-1),(1,1),(2,3)] , we take R=[(x,y,x),(u,v,w)] and solve AR=I_(3) , i.e., [(1,-1),(1,1),(2,3)][(x,y,z),(u,v,w)]=[(1,0,0),(0,1,0),(0,0,1)] {:(implies,x-u=1,y-v=0,z-w=0),(,x+u=0,y+v=1,z+w=0),(,2x+3u=0,2y+3v=0,2z+3w=1):} As this system of equations is inconsistent, we say there is no right inverse for matrix A. Which of the following matrices is NOT left inverse of matrix [(1,-1),(1,1),(2,3)]?

Let A be an mxxn matrix. If there exists a matrix L of type nxxm such that LA=I_(n) , then L is called left inverse of A. Similarly, if there exists a matrix R of type nxxm such that AR=I_(m) , then R is called right inverse of A. For example, to find right inverse of matrix A=[(1,-1),(1,1),(2,3)] , we take R=[(x,y,x),(u,v,w)] and solve AR=I_(3) , i.e., [(1,-1),(1,1),(2,3)][(x,y,z),(u,v,w)]=[(1,0,0),(0,1,0),(0,0,1)] {:(implies,x-u=1,y-v=0,z-w=0),(,x+u=0,y+v=1,z+w=0),(,2x+3u=0,2y+3v=0,2z+3w=1):} As this system of equations is inconsistent, we say there is no right inverse for matrix A. The number of right inverses for the matrix [(1,-1,2),(2,-1,1)] is

Find the maximum potential difference which may be applied across an X-ray tube with tungsten target without emitting any characteristics K or L X-ray. The energy levels of the tungsten atom with an electron knocked out are as follows. Cell containing vacancy K L M Energy in keV 69.5 11.3 2.3

Let A be an mxxn matrix. If there exists a matrix L of type nxxm such that LA=I_(n) , then L is called left inverse of A. Similarly, if there exists a matrix R of type nxxm such that AR=I_(m) , then R is called right inverse of A. For example, to find right inverse of matrix A=[(1,-1),(1,1),(2,3)] , we take R=[(x,y,x),(u,v,w)] and solve AR=I_(3) , i.e., [(1,-1),(1,1),(2,3)][(x,y,z),(u,v,w)]=[(1,0,0),(0,1,0),(0,0,1)] {:(implies,x-u=1,y-v=0,z-w=0),(,x+u=0,y+v=1,z+w=0),(,2x+3u=0,2y+3v=0,2z+3w=1):} As this system of equations is inconsistent, we say there is no right inverse for matrix A. For which of the following matrices, the number of left inverses is greater than the number of right inverses ?

NCERT TAMIL-NUCLEI-EXERCISE
  1. Obtain the binding energy (in MeV. Of a nitrogen nucleus (.(7)^(14)N),...

    Text Solution

    |

  2. Obtain the binding energy of the nuclei .26Fe^(56) and .83Bi^(209) in ...

    Text Solution

    |

  3. A given coin has a mass of 3.0g. What is the nuclear energy that would...

    Text Solution

    |

  4. Write nuclear reaction equation for (i) alpha decay of .88Ra^(226) ...

    Text Solution

    |

  5. A radioactive isotope has a life of T years. How long will it take the...

    Text Solution

    |

  6. The normal activity of living carbon -containing matter is found to be...

    Text Solution

    |

  7. Obtain the amount of .^60Co necessary to provide a radioactive source ...

    Text Solution

    |

  8. The half life of .38^90Sr is 28 years. The disintegration rate of 15 m...

    Text Solution

    |

  9. Obtain approx. the ratio of the nuclear radii of the gold isotope .79A...

    Text Solution

    |

  10. Find the Q-value and the kinetic energy of the emitted alpha-particle ...

    Text Solution

    |

  11. The radionuclide .6C^(11) decays according to .6C^(11)to .5B^(11) +e^(...

    Text Solution

    |

  12. The nucleus .^(23)Ne deacays by beta-emission into the nucleus .^(23)...

    Text Solution

    |

  13. The Q value of a nuclear reaction A+b=C+d is defined by Q=[mA+mb-mC-...

    Text Solution

    |

  14. Suppose, we think of fission of a .26Fe^(56) nucleus into two equal fr...

    Text Solution

    |

  15. The fission properties of .84Pu^(239) are very similar to those of .92...

    Text Solution

    |

  16. A 1000 MW fission reactor consumes half of its fuel in 5.00y. How much...

    Text Solution

    |

  17. How long can an electric lamp of 100W be kept glowing by fusion of 2.0...

    Text Solution

    |

  18. Calculate the height of the potential barrier for a head on collision ...

    Text Solution

    |

  19. from the relation R=R0A^(1//3), where R0 is a constant and A is the ma...

    Text Solution

    |

  20. For the beta^+ (positron) emission from a nucleus, there is another co...

    Text Solution

    |