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There are four radioactive decay series ...

There are four radioactive decay series called thorium `(4n)`, uranium `(4n + 2)` actinium `(4n + 3)` and neptunium `(4n + 1)` series. Neptunium series is artificial while other three series are natural. The end productsd of each radioacitve decay series have stable nuclei. All natural decay series terminate at lead but neptunium or artificial series terminate at bismuth.
The end product formed in the disintegration of `._(88)Ra^(222)` is

A

`._(81)TI^(304)`

B

`._(82)Pb^(206)`

C

`._(86)Rn^(222)`

D

`._(83)Bi^(207)`

Text Solution

Verified by Experts

The correct Answer is:
B
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There are four radioactive decay series called thorium (4n), uranium (4n + 2), actinium (4n + 3) and neptunium (4n + 1) series. Neptunium series is artifical while other three series are natural. End products of each radioactive decay series have stable nuclei. All natural decay series terminate at lead but neptunium or artificial series terminates at bismuth. The starting isotope and the end product isotope of actinium series are:

There are four radioactive decay series called thorium (4n) , uranium (4n + 2) actinium (4n + 3) and neptunium (4n + 1) series. Neptunium series is artificial while other three series are natural. The end productsd of each radioacitve decay series have stable nuclei. All natural decay series terminate at lead but neptunium or artificial series terminate at bismuth. ._(86)Rn^(219) is a member of actinium series. Another member of same series is

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  • There are four radioactive decay series called thorium (4n) , uranium (4n + 2) actinium (4n + 3) and neptunium (4n + 1) series. Neptunium series is artificial while other three series are natural. The end productsd of each radioacitve decay series have stable nuclei. All natural decay series terminate at lead but neptunium or artificial series terminate at bismuth. Actinium series begins with an isotope of

    A
    Actinium
    B
    Radium
    C
    Uranium
    D
    Polonium

  • There are four radioactive decay series called thorium (4n) , uranium (4n + 2) actinium (4n + 3) and neptunium (4n + 1) series. Neptunium series is artificial while other three series are natural. The end productsd of each radioacitve decay series have stable nuclei. All natural decay series terminate at lead but neptunium or artificial series terminate at bismuth. The end products of uranium and actinium series are, respectively

    A
    `Pb-206, Pb-207`
    B
    `Pb-206,Pb-208`
    C
    `Pb-207,Pb-208`
    D
    `Pb-206,Bi-208`

  • There are four radioactive decay series called thorium (4n) , uranium (4n + 2) actinium (4n + 3) and neptunium (4n + 1) series. Neptunium series is artificial while other three series are natural. The end productsd of each radioacitve decay series have stable nuclei. All natural decay series terminate at lead but neptunium or artificial series terminate at bismuth. The starting isotope and the end product: isotope of actinium series are

    A
    `._(88)Ac^(227)` and `._(82)Pb^(208)`
    B
    `._(92)U^(235)` and `._(82)Pb^(207)`
    C
    `._(92)U^(238)` and `._(82)Pb^(207)`
    D
    `._(92)U^(235)` and `._(82)Pb^(208)`

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