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प्रश्न
Under which conditions does the nucleus of an atom tend to radioactive?
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उत्तर
The nucleus of an atom tends to be radioactive when the number of neutrons in the nucleus exceeds the number of protons inside it.
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संबंधित प्रश्न
State three factors on which the rate of emission of electrons from a metal surface depends
State any two precautions to be taken while handling radioactive substances
What is meant by radioactivity?
What do you mean by Atomic number
Radioactive substances were found to give off three types of rays. Name them. How do they
(a) React to the magnetic field?
(b) React to the electric field?
(c) Act when different thickness of lead sheets is placed in their path?
Why are materials of low work function preferred as thermionic cathode materials?
Which of the following statements is/are correct?
- α particles are photons
- Penetrating power of γ radiation is very low
- Ionization power is maximum for α rays
- Penetrating power of γ radiation is very high
Heavy radioactive elements eventually turn into ______.
A radioctive sample decays `7/8` times its original quantity in 15 minutes. The half-life of the sample is ______.
Assertion (A): The force of repulsion between atomic nucleus and α-particle varies with distance according to inverse square law.
Reason (R): Rutherford did α-particles scattering experiment.
