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A certain stable nucleide, after absorbi...

A certain stable nucleide, after absorbing a neutron, emits `beta`-particle and the new nucleide splits spontaneously into two `alpha`- particles. The nucleide is

A

`""_2^4He`

B

`""_3^7Li`

C

`""_4^6Be`

D

`""_3^6Li`

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The correct Answer is:
B
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AAKASH INSTITUTE ENGLISH-NUCLEI-ASSIGNMENT (SECTION-B)
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  2. After 3 hours, only 0.25 mg of a pure radioactive material is left, if...

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  3. Pauli suggested the emission of nutrino during beta^+ decay to explain

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  4. An unstable nuclide with N/P ratio more than that required for stabili...

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  5. Half lives for alpha and beta emission of a radioacative materila...

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  6. Two radioactive samples of different elements (half-lives t1 and t2 re...

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  7. Choose the correct statement

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  8. N atoms of a radioactive element emit n alpha particles per second. Th...

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  9. 90% of the active nuclei present in a radioactive sample are found to ...

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  10. A sample of radioactive element has a mass of 10 g at an instant t=0. ...

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  11. During mean life of a radioactive element, the fraction that disintegr...

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  12. An element A decays into an element C by a two step process A to B + ....

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  13. After three half lives, the percentage of fraction of amount remain is...

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  14. The radioactivity of a certain radioactive element drops to 1//64 of i...

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  15. The half-life of a radioactive substance against alpha-decay is 1.2 xx...

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  16. The value of binding energy per nucleon is

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  17. In the nuclear fusion reaction ""(1)^(2)H+""(1)^(3)Hto""(2)^(4)He+""(0...

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  18. A nucleus ""^(220)X at rest decays emitting an alpha-particle . If ene...

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  19. Radioactive nuclei P and Q disintegrate into R with half lives 1 month...

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  20. A radioactive element X emits six alpha-particles and four beta-partic...

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