Home
Class 12
CHEMISTRY
A radioactive element X, decays by the s...

A radioactive element `X`, decays by the sequence and with half-lives, given below,
`X underset(30"min")overset(alpha)(rarr) Y underset(2"days")overset(beta)(rarr)`
Which of the follwing statemetns about this system are correct?

A

After two hours, less than 10% of the initial X is left

B

Maximum amount of Y present at any time before 30 min is less than 50% of the initial amount of X

C

Atomic number of X and Z are same.

D

The mass number of Y is greater than X

Text Solution

Verified by Experts

The correct Answer is:
d
Promotional Banner

Topper's Solved these Questions

  • RADIOACTIVITY AND NUCLEAR TRANSFORMATION

    OP TANDON|Exercise OBJ - B|54 Videos

  • RADIOACTIVITY AND NUCLEAR TRANSFORMATION

    OP TANDON|Exercise Assettion Reason|26 Videos

  • RADIOACTIVITY AND NUCLEAR TRANSFORMATION

    OP TANDON|Exercise Problem Practices|44 Videos

  • ORGANIC COMPOUNDS CONTAINING NITROGEN

    OP TANDON|Exercise Single integer|8 Videos

  • SATURATED ALIPHATIC HYDROCARBONS

    OP TANDON|Exercise SINGLE INTEGER ANSWER TYPE QUESTIONS|7 Videos

Similar Questions

Explore conceptually related problems

A radioactive element A decays by the sequence and with half-lives given below: A underset(alpha)overset(30 "min"rarr B underset(2 beta)overset(2 "days")rarr C Which of the following statement about this system are correct?

A radioactive element A decays by the sequuence with the half-lives given below : Aunderset(30min)overset(alpha)toBunderset(2 days)overset(2beta)toC Which of the following statements about this correct?

A radiioactive element X , decays by the sequence and with half-lives, given below: X["Half-life" = 30 "min"] overset(lambda_(1))(rarr) Y + alpha Y["Half-life" = 2 "day"] overset(lambda_(2))(rarr) Z + 2beta Which of the follwing statements is correct?

underset((A))(EtCOCl) overset((i)H_2 N.OH) underset ((ii) overset(Ө)O H) rarr (B) overset(EtOH) rarr (C) Which of the following statements are correct about the given reaction ?

Ph-underset(OH)underset(|)CH-overset(O)overset("||")C-OHoverset(Delta)rarr(X) (X) will be:

OP TANDON-RADIOACTIVITY AND NUCLEAR TRANSFORMATION -OBJ - A
  1. The number of neutrons accompanying the formation of .(54)Xe^(139) and...

    Text Solution

    |

  2. Thiosulphate ion (S(2)O(3)^(2-)) on acidification changes to SO(2) alo...

    Text Solution

    |

  3. A radioactive element X, decays by the sequence and with half-lives, g...

    Text Solution

    |

  4. Identify [A] and [B] in the following: .(29)^(227)Ac overset(-beta)(...

    Text Solution

    |

  5. beta-particle is emitted in radioactivity by

    Text Solution

    |

  6. The nuclear reaction ""(29)^(63)Cu +""(2)^(4)He rarr ""(17)^(37)Cl +...

    Text Solution

    |

  7. ""^(226)Ra disintegrates at such a rate that after 3160 years, only on...

    Text Solution

    |

  8. ""(92)U^(235) nucleus absorbs a neutron and disintegrates into ""(54)X...

    Text Solution

    |

  9. The radioisotope , tritium (""(1)^(3)H) has a half-life of 12.3 years....

    Text Solution

    |

  10. The radioactive nuclide .(90)^(234) Th shows two successive beta- dec...

    Text Solution

    |

  11. The half life of radioactive isotope is 3 hour. If the initial mass of...

    Text Solution

    |

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

    Text Solution

    |

  13. A radioactive element gets spilled over the floor of a room. Its half ...

    Text Solution

    |

  14. A photon of gamma radiation knocks out a proton from ""(12)Mg""^(24) n...

    Text Solution

    |

  15. The end product of the series, starting with .(90)Th^(232), is

    Text Solution

    |

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

    Text Solution

    |

  17. Calculate the mass loss in the following: .(1)^(2)H + .(1)^(3)H to ....

    Text Solution

    |

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

    Text Solution

    |

  19. In the reaction .1^2 H + .1^3 H rarr .2^4 He + .0^1 n, if the binding ...

    Text Solution

    |

  20. Two radioactive elements X and Y have half lives 6 min and 15 min resp...

    Text Solution

    |