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The mass number of a nucleus is equal to...

The mass number of a nucleus is equal to

A

always less than its atomic number

B

always more than its atomic number

C

equal to its atomic number

D

some times more than and some times equal to atomic number

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The correct Answer is:
D
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AAKASH SERIES-NUCLEI-Exercise-I
  1. The distance of closest approach of alpha particle to the nucleus was ...

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  2. The mass number of a nucleus is equal to

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  3. The graph of on (R//R(0)) versus ln A (R=radius of nuccleus and A= its...

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  4. The mass density of a nucleus varies with mass number A as:

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  5. Observe the following statements regarding isotones : a. .^(39)K and...

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  6. The ratio of the volume fo the atom to the volume of the nucleus is of...

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  7. Which of the forces are considered as shortest ranged ?

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  8. The origin of nuclear force between nucleons is due to the exchange of

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  9. Nuclear forces are

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  10. If the nuclear force between two protons, two neutrons and between pro...

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  11. One requires energy En to remove a nucleon from a nucleus and an energ...

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  12. Two nucleons are at a separation of 1xx10^(-15)m. The net force betwee...

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  13. The binding energy per nucleon is maximum at A=56 and its value is aro...

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  14. As the mass number A increases, the binding energy per nucleon in a nu...

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  15. The stability of a nucleus can be measured by

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  16. In nuclear reaction .2He^4 + .ZX^A to .(Z+2)Y^(A+3)+R,R denotes

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  17. The penetrating powers of alpha and beta and gamma radiations, in decr...

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  18. When alpha, beta and gamma radiation pass through a gas, their ionizin...

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  19. The half-life period of a radioactive element x is same as the mean li...

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  20. A fraction f1 of a radioactive sample decays in one mean life, and a f...

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