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The mass of an alpha-particle is....

The mass of an `alpha-`particle is.

A

Less than the sum of masses of two protons and two neutrons

B

Equal to mass of four protons

C

Equal to mass of four neutrons.

D

Equal to sum of masses of two protons and two neutrons

Text Solution

Verified by Experts

The correct Answer is:
A
(a) This is due to mass defect because a part of mass is used in keeping the neutrons and protons bound as `alpha-`particle.
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A2Z-NUCLEAR PHYSICS-Section D - Chapter End Test
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  2. If N(0) is the original mass of the substance of half - life period t(...

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  3. A radioactive sample at any instant has its disintegration rate 5000 d...

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  4. Which of the following atoms has the lowest ionization potential ?

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  5. In the nuclear fusion reaction (1)^(2)H + (1)^(3)H rarr (2)^(4)He + ...

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  9. Some radioactive nucleus may emit.

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  10. Which of the following is a correct statement?

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  13. The binding energy per nucleon of O^16 is 7.97 MeV and that of O^17 is...

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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. Two radioactive X(1) and X(2) have decay constants 10 lambda and lamb...

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