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If a radioactive nucleus decay according...

If a radioactive nucleus decay according to the following reaction
`._72X^180 oversetalphato X_1 oversetbetato X_2 oversetalphatoX_3 oversetgammato X_4` then the mass number and atomic number of `X_4` will be respectively

A

172,70

B

172,69

C

172,68

D

171,69

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The correct Answer is:
B
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AAKASH SERIES-NUCLEI-Exercise-I
  1. In gamma ray emission from a nucleus

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  2. .(+1)e^@ + .(-1)e^@ to 2gamma The above equation satisfies the law of ...

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  3. If a radioactive nucleus decay according to the following reaction ....

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  4. Which of the following particles is most unstable?

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  5. Which of the following are their own antiparticle?

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  6. The products of the fission of U^235 by thermal neutron are

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  7. As the age of star increases

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  8. A particle having no charge and almost no rest mass

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  9. In the nuclear reaction .6C^11 to B5^11 + beta^(+) + X what does X s...

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  10. Two identical nuclei A and B of the same radioactive element undergo b...

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  11. During (beta^-) decay (beta minus), the emission of antinenutrino par...

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  12. A nuclide A undergoes alpha - decay and another nuclide B undergoes be...

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  13. In the fission of U^235 (i) Slow neutron is absorbed by U^235 (ii)...

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  14. Which of the following statements are correct (i) Positron is predic...

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  15. Consider the following two statements A and B and identify the correct...

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  16. Consider the following statements. A, B and identify the correct choic...

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  17. Consider the following statements (A) and (B) and identify the correct...

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  18. Assertion: Free Neutron decays into proton, electron and antineutrino ...

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  19. Assertion : Nuclear forces arise from strong coulombic interactions be...

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  20. Assertion: Energy is released when heavy nuclei E undergo fission or l...

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