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S : When n/p ratio is high, nuclei emits...

S : When n/p ratio is high, nuclei emits `beta-` particles
E : The nuclear change is : `nto p""^(+)+e""^(-)+overset(-)v`

A

Both S and E are correct and E is cporrect explaination of S

B

Both S and E are correct and E not correct explaination of S

C

S is correct but E is wrong

D

S is wrong but the E is correct

Text Solution

Verified by Experts

The correct Answer is:
a
`N//A`
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The n//p ratio for a stable lighter nuclei is about ……………… .

What is the effect on neutron to proton ratio in a nucleus when beta^(-) particle is emitted ? Explain your answer with the help of a suitable nuclear reaction.

Knowledge Check

  • If n//p ratio is high, the nucleus tends to stabilize by :

    A
    The emission of a `beta-` particle
    B
    Neutron capture
    C
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    D
    Any one of the above

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    A
    conversion of proton to neutron
    B
    from outermost orbit
    C
    conversion of proton to neutron
    D
    `beta`-particle is not emitted

  • 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.

    A
    `Cu_(68)`
    B
    `Cu^(59)`
    C
    `Cu^(68)`
    D
    `Cu^(67)`

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    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.

    Unstable nuclei attain stability through disintergration. The nuclear stability is related to neutron- proton ratio (n//p) . n//p ratio for stable nuclei lies quite close to unity for elements with low atomic numbers ( 20 or less) but it is more than one for nuclei having higher atomic numbers. Nuclei having n//p ratio either very high or low undergo nuclear transformation. (i) When n//p ratio is higher than required for stability, the nuclei have the tendency to emit beta -rays, i.e. a neutron is converted into a proton. (ii) When n//p ratio is lower than required for stability, the nuclei increase the ratio, either by emitting alpha -particle or by emitting a positron or by K -electron capture. ""_(13)^(27)Al is a stable isotope , ""_(13)^(29)Al is expected to disintegrate by-

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